Pye T184. 24 Inch monochrome TV from 1976.

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Michael Dranfield

Michael Dranfield

Күн бұрын

Пікірлер: 154
@RobertPostance
@RobertPostance Ай бұрын
Great stuff, Michael, I was a PW reader and enthusiast in the late fifties/early sixties and used get my parts etc. from war surplus shops. I still have a couple of years of PW around 60/62. Thanks for the trip down memory lane!
@lookoutleo
@lookoutleo 2 күн бұрын
Very nice you saved an old set. I loved my 26inch transistor black and white TV. Wish still had it
@007mrdarcy
@007mrdarcy 8 ай бұрын
Once again Michael, a really informative and interesting presentation. Thanks.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Many thanks for that , more coming soon .
@billharris6886
@billharris6886 6 ай бұрын
Hello Michael, I just stumbled upon your video and it brought back a lot of memories. I was born in the US (Florida) in 1955 and always had a fascination for radios and televisions. I started repairing radios and TVs in 1971 and worked for a few TV shops, in 1975 I didn't want to make a career of this so, went on to pursue design. In the US in the mid 1970's, color television was the big seller. Since the US started the sale of color sets in 1954, the interest in the mid 1970's for monochrome sets was limited to smaller portable sets with a maximum screen size of 19 inches. TVs from the UK obviously never got imported to the US since the video standards are different so, it is always intersting for me to see how they are designed. I like the mechanical layout and serviceability of that Pye. Most of the circuitry is on one PC board, with the board perimeter a heatsink. That large power resistor that is in parallel with the series-pass transistor in the power supply is used to share the heat dissipation duty with the transistor. This was probably done at the time reduce cost and limit the maximum voltage drop across the pass transistor, which for the 2N3055 is only 60 volts. That expensive thick-film resistor on the mains input was chosen for it's high surge capability.
@Barbarapape
@Barbarapape 8 ай бұрын
This TV takes me back, i had just turned 21 and had compeleted my apprenticship as a young TV engineer in 1976. I can't remember seeing many of this chassis on my bench, the Philips 210 was a regular visitor with all the usual stock faults including the LOPT that often failed. Most of my test gear such as a tube booster was home made from a magazine design. At least you could see the components back then without a microscope ! Thanks for this trip down memory lane Michael.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I had a 210 but stupidly sold it a long time ago , I too made a crt tester in 1984 from a design in Television magazine , a few years before I had the money to buy the Leader.
@Barbarapape
@Barbarapape 8 ай бұрын
@@michaeldranfield7140 Today we need a backlight tester, except it wouldn't work on Oled displays ! Who would have even guessed how far the TV tech has changed since the colour TV boom era. Today more sets are scrapped than repaired, the same is about to happen with cars. Perhaps we should retrain as EV repairr techs, we know how to handle high voltages !
@ianedwards468
@ianedwards468 7 ай бұрын
Hi Michael, thanks as always for another great video. Never saw one of these sets back in the day but it seems well engineered and a cut above the earlier hybrid offerings from Pye. The CRT is probably past its best but it might be worth checking the value of the resistor in series with the heater supply, R632 (6.8 ohms) in case it has risen in value. Your set is fitted with an A61-520W, the quick heat version of the A61-120W. It boasted (when new) a 5 second warm up time and was obviously intended for use in solid state sets. It has a lower G2 potential (120V instead of 400V) and a lower heater current (240mA) but it might be possible to substitute an A61-120W with some circuit modifications. The EHT stated in the manual is 17.6KV so it would appear to read spot on
@michaeldranfield7140
@michaeldranfield7140 7 ай бұрын
Many thanks for the info.
@RobertHellier
@RobertHellier 7 ай бұрын
I find sometimes with black and white tv sets that haven't been used since the late 70's or early 80s the whole set needs a gentle warm up and run the set under supervision for a good week I find the tube brighten up and sharpen up by itself without making any adjustments. all i am saying sometimes time and patience is needed
@tenmillionvolts
@tenmillionvolts 8 ай бұрын
A wonderful dive into this old Pye. Boy they loved the thick film units back then. Damned unreliable things
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
the thick film resistors have always been trouble whatever set they were used in , very poor in the Thorn 3500 and still trouble in much later sets such as the Hitachi with the HM6251 frame module although these could be just resoldered .
@truthreigns7
@truthreigns7 8 ай бұрын
Great Mr. Michael. Good to see you again.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
got my life back now , spent the last 6 months helping someone out so didn't time for long videos but more coming soon .
@truthreigns7
@truthreigns7 8 ай бұрын
@@michaeldranfield7140 good to have you back. Glad to hear you were helping people. We all need to do that more. But of course it does not surprise me that you are helping people. You always seem to be a very caring person
@Roundymooney
@Roundymooney 8 ай бұрын
Great stuff Mr. Dranfield!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Many thanks for that , I have another also but a hybrid so that should be more fun .
@user-rf9me7xm1w
@user-rf9me7xm1w 8 ай бұрын
When the back was taken off a similar set in our Worksop, a load of cockroaches ran out. We had to get pest control in to fumigate the premises. Very nostalgic vlog, many thanks for posting it.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have another but earlier hybrid , going to be more interesting , no cockroaches but its got woodworm so I don't want to bring it in yet .
@richardwoodwards1202
@richardwoodwards1202 8 ай бұрын
Brings back memories of unboxing from new
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Glad you liked the memories, more coming soon .
@OaklynHall
@OaklynHall 8 ай бұрын
Another excellent video - thank you for sharing it with us and for also sharing your expert knowledge on Televisions. I really enjoy your videos - they are so interesting and I always learn something from them.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
More to come soon !
@mosfettg6857
@mosfettg6857 8 ай бұрын
Nice video good to watch your knowledge of the old set. That spray brought it up looking like a showroom tv 👌
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have been using that ambercleanse for years , its very good for TV cabinet cleaning .
@douglashoff95
@douglashoff95 2 ай бұрын
We don't see any PYE, GEC, Bush, Decca or Murphy sets here in the USA, but have noticed them in TV series such as "The Saint" and "The Avengers". One in particular I noticed was a GEC "Deluxe 23".
@Lyndalewinder
@Lyndalewinder 8 ай бұрын
Great video Michael - thanks for posting
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
No problem , many thanks for watching , more coming soon .
@phillipyannone3195
@phillipyannone3195 8 ай бұрын
Always a pleasure watching your videos, I enjoy the expertise and knowledge you have not to mention your inventory.😊
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
you mean 50 years of hoarding !
@walker55able
@walker55able 8 ай бұрын
great presentation thanks Michael
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Many thanks for that , more stuff coming soon .
@MichaelSmith-xm7ll
@MichaelSmith-xm7ll 8 ай бұрын
Great video well explained, love to see more of these types of videos well done.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
its quite time consuming but there will be more soon .
@kendom33
@kendom33 8 ай бұрын
Great video as usual Michael thank you. I only saw one or two of these in my shop
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
don't think I have ever seen one of these .
@adamwheeldon
@adamwheeldon 8 ай бұрын
extended edition - Thank you Michael - You are the british Shango066 :-)
@stickytapenrust6869
@stickytapenrust6869 8 ай бұрын
Shango has quite an acid tongue, though. I’m gonna start doing resurrection videos soon and I have a similar acid tongue as Shango.
@stevesje71
@stevesje71 8 ай бұрын
Great video. Those green caps on the Lineoutput tuning always seem to fail. I’ve seen many fail in Philips G11 Lineoutput panels
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have a bit more time now so more coming soon .
@jamescrawford2042
@jamescrawford2042 8 ай бұрын
another First class job well done
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
More to come soon !
@dzvsow2643
@dzvsow2643 8 ай бұрын
Wonderful...I like electronics very much and am 17 from Africa. Hopefully in the future I will learn electronics in college.... Keep it up am learning a lot from you!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
no servicing courses now in the UK , TVs are just considered disposable
@markdunstan8277
@markdunstan8277 8 ай бұрын
Really great video indeed and very informative Thank you
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Many thanks for that , more coming soon .
@robtitheridge9708
@robtitheridge9708 8 ай бұрын
Very interesting like you i have not come across that chassis ,but i do like the simplisity.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
very simple circuitry and a pleasure to repair
@19seventy97
@19seventy97 8 ай бұрын
Fantastic video as always and a brilliant result all things considered. I would recommend replacing that 1n8 cap with a modern equivalent as those green tubular ones are notoriously unreliable, known for failing and sending the EHT sky high, blowing a hole in the neck of the CRT
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have had people say these green caps are un reliable but is it just because they are old or were they un reliable from the beginning , wax paper caps were ok once upon a time .
@19seventy97
@19seventy97 8 ай бұрын
I think its through age, as they’ve lasted til now. I’ve always been told to toss any out and to use a modern replacement instead of another of those green tubulars. I’m by no means an expert, just echoing what others have told me
@stickytapenrust6869
@stickytapenrust6869 8 ай бұрын
31:20 - those green tuning capacitors were not designed for the voltage spikes they would get. They were well-known in Philips sets of the 70s and early 80s (which of course is what this technically is!) Those capacitors managed to work in that job anyway but now as they age they are becoming less capable of jobs they were not designed to do but still work fine with jobs they were designed for.
@monteceitomoocher
@monteceitomoocher 8 ай бұрын
They weren't much good, used to regularly fail in the g8 colour chassis.
@stickytapenrust6869
@stickytapenrust6869 8 ай бұрын
@@monteceitomoocher They were good *in applications they were designed for*. They weren’t designed for the voltage pulses you get in a line timebase.
@monteceitomoocher
@monteceitomoocher 8 ай бұрын
@@stickytapenrust6869 Very true, but i lost count of how many 5n1 flyback tuning caps i replaced in the g8 chassis, thinking back I'm not certain there was the choice of dielectric there is now, except for special applications, anyway, Philips did come up with better components for the job.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
a few people have said this but are they just un reliable due to age , I don't remember them failing 40 odd years ago ?
@R2D2inAustralia
@R2D2inAustralia 8 ай бұрын
My relief when you said that you needed to read the manual to refresh your memory to use some test equipment….
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
never thought I would be repairing CRT stuff again so forgot how the tester works, I bought that brand new in about 1987 !
@daveevans1236
@daveevans1236 8 ай бұрын
Don't know a thing about the workings of a TV or what he was explaining, but found it fascinating anyway.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
wont be long before the workings of CRT has been completely forgotten about if it wasn't for youtube , were now in a disposable age and the people who use to do this stuff are all getting older .
@alunroberts1439
@alunroberts1439 8 ай бұрын
Miss the old days in the TV shop were we made are own Tube booster way back in 1991
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Still got my homade crt tester from 1984
@alunroberts1439
@alunroberts1439 8 ай бұрын
@@michaeldranfield7140 I did have televition mags going back years worked with guys toni less he worked for granada bill toni 2 and some others shop closed down but me an toni still did work from his flat miss them all am the last one still on earth
@adamdavies163
@adamdavies163 8 ай бұрын
Hi Michael, hope you're keeping well!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Its a long story but I have got my life back now so a bit more time for making videos, I have spent the last 6 months helping someone out .
@video99couk
@video99couk 8 ай бұрын
Wow, what a world away from other TVs of just a few years earlier like the Thorn 1500. This must have been one of the very last new monochrome designs with lots of modern features. I wonder if it has gated AGC rather than the usual rubbish mean level AGC which doesn't allow for black. Pity about the focus electrode. I once knew someone who had a monochrome portable with infra red remote control, I remember thinking how that was an interesting combination, I wish I could remember what make it was.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have a very soft spot for the Thorn 1500, I brought many a set back from the tip on my bike in the 70 s and once found one on the pavement while walking a girlfriend back to the bus stop in 1982, so for me nothing tops the 1500 I'm afraid to say , I would have thought demand for large screen monos had dwindled to a trickle by the time this set was on the market .
@threelaps5282
@threelaps5282 8 ай бұрын
We had a few of these, still being delivered new in 1980 usually in a Philips lorry. My memory was one soak testing on the bench mid morning in November showing Test Card F with bad interfearence. In the end, another test card from ZDF appeared completely blotting out BBC! This remained for some time - very unusual conditions...
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Dont think I have ever seen one of these before , I would have thought that by 1980 the demand for large screen black and white would have dwindled to next to nothing due to the popularity of colour .
@pauldavies6037
@pauldavies6037 6 ай бұрын
@@michaeldranfield7140 Many OAPS that had then
@pauldavies6037
@pauldavies6037 6 ай бұрын
I remember the Pye 181 and 184's well they had a very good picture and sound nice push button units and cabinets.rather weird low focus and A1 tubes and as below comments those green line caps T F Resistors and we had the DC end of the EHT rectifier plastic holder could arc to chassis and check all solder joints spray the slider controls
@ralphj4012
@ralphj4012 8 ай бұрын
Great condition, considering its age. Brought back some memories, 18kV seemed about right or was it low?
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Off the top of my head I think its about right, 18-19Kv .
@monteceitomoocher
@monteceitomoocher 8 ай бұрын
Vaguely remember this chassis but never saw many, interesting to see how little actual stuff you needed to drive a wide angle crt right at the end of that era, shame you can't just drop the tube off at the local re-gunning shop anymore..
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I wouldn't think anyone re gunns CRTs now , another long lost art .
@leighbennett1961
@leighbennett1961 8 ай бұрын
When I was a kid in the 80s my parents rented a TV through Radio Rentals. The remote control was wedge shaped and slotted into a space below the screen along the bottom. Would love to know what make/model it was.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
if it was a colour TV the set you are referring to is the ITT CVC25 chassis , I think , the remote control had a couple of coloured buttons, orange and red and the rest were black , when it was docked in the front of the TV the buttons stuck out so you could still use it to control the set.
@leighbennett1961
@leighbennett1961 8 ай бұрын
@michaeldranfield7140 yes it was a full sized colour set. Quite modern looking for 1985 (ish) with a dark grey housing. The remote apart from being black and wedge shaped had raised round buttons and could be used when docked in the TV as you described. It's the only TV I can remember from my childhood and ive been trying to find it on the web for years. Before that we rented a set that was always going wrong. That one had a sliding wood shutter on the front.
@michaelwaite6725
@michaelwaite6725 8 ай бұрын
We sold a few new Pye tvs at the time but this would be probably the last large screen tv chassis that was sold in mid 70s as most people were buying or renting colour tv by then , Philips used that 300 and horrid 320 chassis and Thorn had moved on to the 1615 chassis so choice was narrowed down .Nice to see tv still in working order tho maybe the tube will improve with use rather than giving it a "boost" or tap with a screwdriver like we used to do
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
The CRT has woken up considerably since I first switched it on , I remember as a small boy the TV rental man coming out to our Thorn 1400 with a picture fault, he tapped the neck of the tube and the picture came back on , the next day it went off again and they took it away to fit a new tube .
@pi6706
@pi6706 8 ай бұрын
My Gran who lived in North Devon had the same set as this. She had it for over 20 years from new. She couldn’t watch colour television. I always liked the picture collapse when turned off.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
the good old days when we only had 3 channels and TV ceased transmission at midnight.
@pi6706
@pi6706 8 ай бұрын
👍🏻
@pi6706
@pi6706 8 ай бұрын
@andrew_koala2974”use din different contexts” 🤣
@minimaxxl8
@minimaxxl8 8 ай бұрын
Nice TV-set, these green (and also come in pink) capacitors are Paper-resin type capacitors. I have seen even new old stock once go bad after a few hours of service. If you are planning on run the set regularly, it would replaced with a decent Wima FKP1 capacitor for peace of mind.
@Bristoll170
@Bristoll170 8 ай бұрын
Wonder if it's worth giving the tube a re-gun? Not sure if that's still an available service. As you say the rest of the set looks in very good order. Thanks for another great watch 👍. Cheers Pete' New Zealand.
@stickytapenrust6869
@stickytapenrust6869 8 ай бұрын
There isn’t an available re-gun service. RACS in France closed some years ago. The nearest regunners are in the US.
@Bristoll170
@Bristoll170 8 ай бұрын
@@stickytapenrust6869 Ah. That could make it trickey 🤔. We had two re gun service places here. Don't know if either are still in opertion, but would be a long way to send a tube here if they are 😄
@andygozzo72
@andygozzo72 8 ай бұрын
good ol' servisol/ambersil foam cleaner, its good stuff !
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have used this you years , excellent stuff.
@marcse7en
@marcse7en 8 ай бұрын
Judging by the IC date codes, the set appears to be from the second half of 1977.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
yes, it would be quite late this for a large screen black and white , although I think small screen mono sets were still produced till about 1985.
@matthewgriffin4761
@matthewgriffin4761 8 ай бұрын
Thanks Michael. Ive been looking forward to seeing the next video if yours and it didnt disapoint. Looking forward fo the next TV.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
More coming soon , I have some more sets now !
@andic6676
@andic6676 4 ай бұрын
Do you ever come across sets fitted with the ITT VC200 chassis ? I have a cabinet and tube in the loft.
@michaeldranfield7140
@michaeldranfield7140 4 ай бұрын
I haven't got one of those in my collection but I get new sets all the time so who knows what the future holds .
@tuopeeks
@tuopeeks 8 ай бұрын
Remember seeing quite a few late Philips/Mullard B&W tubes with poor cathode emission back in the 1980s with poor contrast control.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
the tubes were always worse in the 24 inch sets than in the 20 s but this has woken up considerably since the start of the video although the focus is still very poor .
@andygozzo72
@andygozzo72 8 ай бұрын
i've heard in many places those green philips caps fail a lot, they can cause eht to rocket and blow through crt necks in some sets!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
i cant say I have experienced trouble with these caps when the sets were just a few years old , but yes a few people made the same comment, I have had the 470uf red pye cap in the G11 blow the tube neck though.
@andygozzo72
@andygozzo72 8 ай бұрын
@@michaeldranfield7140 i've heard of that as well, presumably it makes the ht supply rise, but surely the glow switch should activate in that case? i had one of those green caps, 2.7nf, pop the end off and go low capacity in a pye ct200b/713 chassis, the eht flashed over on top of the line output transformer
@azshaw123
@azshaw123 8 ай бұрын
Amazing video, i would love to go through your shop, i bet you have some lovely beta vcr's in there!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I do actually have a few betamax yes, but many years ago threw un countable numbers away when no one wanted them .
@Paul_1967
@Paul_1967 8 ай бұрын
Great video as always, do you make a lot of your own test equipment? I noticed the reforming capacitor box is this homemade? Would you share the designs of some of your equipment if you do ? Thanks for sharing. Kind regards Paul.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I use to make all my own stuff in years gone by , don't seen to have the time to do it now , the cap reforming box was just a modified design from Practical electronics magazine .
@andygozzo72
@andygozzo72 8 ай бұрын
we had a 20 inch one with very similar innards from new many years ago, early 80s , cant remember model no. but T18something, but not a T181 as said in the book, i googled a 181 and its not that, it was used for quite a few years until we were given a colour set, it was eventually sold to someone in the 90s, i got it back a few years later when it was worn out, tube almost no emission! it had a large white ceramic power resistor in it, no thick film or smaller resistor on heatsink! maybe later version
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
the thick film unit only seems to be used in the later production sets and a few small differences in the line output stage , no doubt there are other models I have not seen , those radio TV servicing books make fascinating reading .
@paulswift700
@paulswift700 8 ай бұрын
Where do you get your tins of amber lean? I use to use it meany years ago brilliant stuff. Paul.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I get it from same place I always have for donkeys years , CPC in Preston ,.
@ed731pdh
@ed731pdh 7 ай бұрын
As they say, looking at the initial state of the cabinet, you'd need a tetanus shot just looking at it.
@xyredmax
@xyredmax 5 ай бұрын
Hello MD - Did we ever see the circuit diagram of your cap restorer, I have had a scan through your previous videos but could not see anything?
@andrewthompsonuk1
@andrewthompsonuk1 8 ай бұрын
I find it strange that someone would buy a B&W Television in 1976, colour had been in the UK for a long time. Was the TV license cheaper?
@Oldgamingfart
@Oldgamingfart 8 ай бұрын
Indeed it was, and believe it or not, even today you can still apply for a B&W licence! I also recall that some older customers actually preferred to watch TV in B&W; coupled with the fact that colour TV's at the time were an expensive (and not always reliable!) investment, you can see how these stayed popular even into the eighties, or simply as a second set.
@simonbeasley989
@simonbeasley989 8 ай бұрын
I'm 53 years old and we didn't have a colour TV until I was 12 in the early 80s. The licence was much cheaper for B&W and even as late as that I think it was common to rent because of the likelihood of them going wrong. I guess reliability as well as a bigger screen for less would have been the advantage of the Pye. I remember my parents paying £10 a month, which adjusted for inflation would buy you a very nice 43" with a year's rent at today's prices!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Not only was the licence cheaper but the television set was considerably cheaper to buy than a colour.
@andrewthompsonuk1
@andrewthompsonuk1 8 ай бұрын
I have to add that my parents purchased a B&W set in 1973 just before the go live of colour. Colour sets were half the price of a Ford Cortina in NZ. Our Phillips set never went wrong and was still used 20 years later.
@jumboegg5845
@jumboegg5845 8 ай бұрын
All TV signals in Australia are now digital, last analog one was switched off about 10 years ago.
@michaelclutton8446
@michaelclutton8446 8 ай бұрын
The analog was switched off here in the UK in 2012
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
we switched off about 12 years ago but all you need is an old sky box with RF outlet to run these old sets .
@jumboegg5845
@jumboegg5845 8 ай бұрын
@@michaeldranfield7140 We call 'em a digital set top box, outputst a rf signal through standard coax. Was wondering if it happened through out world, although wouldn't be surprised if America didnt switch off all the analog. There were many times when I had very poor analog reception, but the audio was ok , and you could see something amongst the noise,. Cant do that with digital
@mattsan70
@mattsan70 8 ай бұрын
wonder how many LED tv's will still be working i48 years from now
@mrnmrn1
@mrnmrn1 8 ай бұрын
My guess is next to none. I can see two main reasons: the conductive glue that connects the COF drivers to the LCD panel will probably fail within a few decades, second: data retention time of modern flash memories is 5-20 years. So at 40 years, most of the sets will have corrupted firmware. Unfortunately the same is true to modern test equipment, and everything that uses flash memory.
@andrewwalsh5837
@andrewwalsh5837 8 ай бұрын
@@mrnmrn1 The Sony android sets seemed to be the worst suffering from corrupted firmware, see it quite often
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
Probley none, especially with lead free solder and all software driven and of course not forgetting built in obsolescence , a way of making you replace your TV .
@mrnmrn1
@mrnmrn1 8 ай бұрын
@@andrewwalsh5837 I have a Sony DVD recorder from ~2006-2008, in which the firmware got corrupted in about 2019. I bought it cheap with the fault of boot looping, managed to do a factory reset through the service menu, it worked for a day than started boot looping again, and the service menu is not accessible anymore. I should buy an other one from that same model with a dead drive but working firmware, and copy the flash chip.
@simonbeasley989
@simonbeasley989 8 ай бұрын
That would have been a monster back then, wouldn't it, 24"?
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
It would and the tubes never lasted as long as the smaller 20 inch sets I use to find.
@robertpitt8418
@robertpitt8418 8 ай бұрын
You moved the disk magnets while clearing, would this have any effect on the picture quality.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
no , not picture quality, they are for picture centring or pincushion distortion, one or the other .
@manolisgledsodakis873
@manolisgledsodakis873 8 ай бұрын
Focus fault: Tube base connection bad, Michael?
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
No I checked the tube base, I wouldn't be surprised if its not because the emission of the CRT has dropped but didn't want to rejuvenate as this is very short lived
@stephenriley971
@stephenriley971 8 ай бұрын
The good old days when TV repair/sales was a good trade to be in. Sets could last for twenty years unlike modern rubbish where you are lucky if it lasts eighteen months. That's progress for you.
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
too right, modern sets are just considered disposable .
@michaelturner4457
@michaelturner4457 8 ай бұрын
Is this one of the last of the large screen monochrome TVs?
@stickytapenrust6869
@stickytapenrust6869 8 ай бұрын
Not quite. There was the Thorn 1615, a Portuguese-built Pye and a Cap10-branded Samsung all in the early-mid 80s. There was also a 20” Grundig that I’ve got in my collection… somewhere!
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
getting up that way for large screen but I think production of small screen portable back and white sets continued till about 1985 ish , they were popular as second and bedroom sets
@Synthematix
@Synthematix 4 ай бұрын
My grandad used to have pye b&w sets, they always arked/sizzled around the crt you could smell the ozone, and the tubes went weak quite quickly, early solid state stuff was pretty problematic, the repair bloke was around his house all the time, some of it was his fault though, he used to keep cranking the brightness up, similar problem to modern led sets really, those leds dont last long and turn blue in a very short period of time if you crank them up. LG are the worst of the lot for this issue. what i normally do is go in the firmware and limit the led output to 75% maximum, theres no need to have them so bright.
@Synthematix
@Synthematix 8 ай бұрын
Those dreaded slide controls, they date sets to the mid 70s
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
and I resisted the urge to spray servisol in as a week later the whole thing would have no doubt disintegrated !
@Synthematix
@Synthematix 8 ай бұрын
@@michaeldranfield7140 Take em apart and run an ordinary lead pencil along the tracks to repair them, you are right, spraying these with any type of cleaning oil will destroy them.
@DimasFajar-ns4vb
@DimasFajar-ns4vb 8 ай бұрын
wow
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
I have more sets to do soon !
@rosscammisola335
@rosscammisola335 7 ай бұрын
Visionhire use to Rent a lot these to Pensioners , Thick Film Resistors were a new trend those days but Engineers were not keen on them. All the CRT s of that period seemed not to last as long as older Tvs and go soft .
@guimbadriver
@guimbadriver 8 ай бұрын
looks like the philips chassis
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
weren't Pye and Phillips the same group in the end
@johnr6168
@johnr6168 7 ай бұрын
@@michaeldranfield7140 They were indeed. Philips bought the old Ecko name so this also appeared on a few of their TVs.
@TKomoski
@TKomoski 8 ай бұрын
Are you teaching any youngins your craft
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
sadly not, no one in there right mind would be going into TV repairs now , were in a disposable world, even the city and guilds qualification in TV servicing no longer exists, due no doubt to lack of demand.
@gordonemery6949
@gordonemery6949 8 ай бұрын
I remember my father playing about with these old TV's ,then I saw the mullard sticker and I remembered that name from back in the day 60yrs ago now so just googled it and it looks like it they were something to do with crts and tv repairs? But couldn't get open their advert ,it looks like someone's accusing them of some dodgy dealings and they have shut down their link,that apart thanks for the vid👍.....
@michaeldranfield7140
@michaeldranfield7140 8 ай бұрын
mullard was once a world famous company who started off making valves, then moved onto CRT s , semiconductors, TV tubes and electronic components, although well gone now most of there stuff is still very highly regarded and some audio valves sell for large amounts of money on the internet.
@johnr6168
@johnr6168 7 ай бұрын
@@michaeldranfield7140 I have an HMV 1960 VHF radio with some Mulard OC170 and OC171 transistors which are still going strong. They were the first transistors manufactured in the UK that could work up to around 100MHz.
@njm1971nyc
@njm1971nyc 3 ай бұрын
Always found "modern" large-screen black & white tvs a bit depressing! Portable black & whites were kinda "normal" still, in the early-to-mid 80s, but a large-screen black & white in a livingroom was a sure sign that money was tighter than tight 🫤 My friend's mum still had a black & white Philips in the livingroom well into the late 80s. You had to be pretty broke to not have a colour TV in the 80s! 🫤
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