A Broken Commodore 1084S and 22000 volts i don't want to touch

[@Snowcrash777]

I worked on Apache electronics and I don't work on CRTs. About 40 years ago (age 12) I watched my Dad put an oscilloscope to a TV and even though my father was a highly trained and experienced electronic technician who worked for G.E. Calma at the time he did not completely discharge all of the capacitors. The result was a spark so bright it lit up the wall behind him, an electrical arc that sounded like a small concision grenade, and my Dad cussing himself out loudly. After which he explained how close to killing himself he came.

[@HoldandModify]

Thank you Dr. Chris for all your efforts. You risked all for HAM !

[@ChrisEdwardsRestoration]

I was gonna wear a helmet.

[@DarrenJCrawford]

Well isn't that a coincidence, I talk about the CRTs on your last KZbin video and here you are trying to get one fixed. 😄

[@DarrenJCrawford]

@@ChrisEdwardsRestoration I'd wear a half inch rubber onesie.

[@HoldandModify]

@@DarrenJCrawford ;)

[@stansova3138]

On any TV tube or tube monitor, you should use a high voltage grounding pen to discharge the high voltage area and caps each time you apply power, and the red wire going to the display tube. Keep your slappers off the high volt area. Used to repair Navy monitors inside aircraft and radar equipment, we used to take a grounding wire and see how long we could draw an arc. By the way Chris I always follow the laws of safety which is if you don't know don't touch it.

[@slaapliedje]

A while back I had bought a 1084S P-1 off of eBay. Whenever I hooked anything up to it, it was yellow. I put it aside for a long while, but finally decided to tackle it one day... ended up trying to tweak the RGB pots on the stem to adjust color, and noticed two more pots, one for Red and one for Blue, on the mainboard. No matter how long I mucked with these, I could not quite get the Blue color to show up. (Red/Green made Yellow) finally, I lucked out and noticed somehow a resistor had been bent and was touching / shorting the blue POT on the mainboard... took the plastic POT adjuster and bent it away from it and magically Blue came to life! This was awesome! I have also used some glue on a cracked PCB of my original Atari SC1435 monitor, but then when I tried to fix the solder points, it melted off the whole trace on the Red pin... I ended up putting a jumper witlre on that and now it works fine.

[@cullmaster7361]

Great to see Dr Chris and “Q” on a collaboration 👍🏻 You are a braver man than me to look at that CRT. Yikes! That’s a lot of voltage… 😬

[@stansova3138]

Just think we used to repair radar power supplies, one test we liked was using a grounded pull off stick to dislodge a person who is attached to a HVolt power supply and see how far we could draw an arc with the stick, Longest arc we could make was about 3 ft. Now remember we are on an air craft carrier, which has steel floors with rubber mats, but I don't know if the HV would stop for them and really didn't want to find out.

[@stansova3138]

Chris did you know why they call it a flyback transformer, touch it one time and if your still around you will know why and remember this, usually 50% of the time you can still live just by the shock alone but most of the deaths are when the person flies across the room and hits his head against something.

[@cmdrYzemaN]

Thanks for not dying 👍⚡️

[@lenm2857]

Usually a CRT monitor won't kill you. The voltage is high, but the amperage is low. It can be very painful however and you might discover a previously unknown heart condition (in the worst possible way). Something that WILL kill you is a standard microwave oven. Voltage is only 4-5,000 volts, but at a much higher amperage. There was a guy who worked (briefly) at the shop where I worked that lost a finger while attempting to repair one. He went into a different line of work afterwards.....

[@ChrisEdwardsRestoration]

You know what they say, there are some things you don't want to be "briefly" associated with.

[@anakondase]

My early 1084 non-s has a bad flyback. Sadly that flyback model isn't avaliable anymore, not even the replacement one, so I have no way to fix it. Sad because it gave me 36 years of fun.

[@alanhaynes4576]

This is why we get led monitors. Suck it up Q, the day of the 1084 is over.

[@anatolykosychenko8038]

Hi Ya & best wishes. SuperB! Thanks for work. Be Happy. Sevastopol/Crimea.

[@keithmcgerr3056]

I haven't played Turrican...Turrican 2, wow I am speechless! HAM loves Amiga's so I can't pick on him to much! 😉

[@HoldandModify]

Thank you. I was a simulation games guy! :)

[@BerndFelsche]

You need a pokey thing with resistor to discharge the tube down to chassis. The pointy electrical contact with long, insulated handle, is shoved under the rubber boot to make contact with the CRT screen. Use same probe on all the caps on the circuit board.

[@SanguineBrah]

Q's description of it ticking a bunch then dying certainly sounds like the flyback arcing then smoking itself (and likely the HOT with it). They are known to go bad on these monitors, although replacements are still available.

[@HoldandModify]

Yeah I was sad to see her go. :/

[@studioxxswe]

Well Mr HAM sir you made your on camera debut today, things will change forever :)

[@artt909]

You fly back is not going to be bad presumably when I fly back, transformer goes bad most of the time it makes one hell of a screwed up sound that makes your hair stand up. You don’t forget the screeching sounds of flyback transformers as they go bad on a good note don’t be too afraid of it if I were you, I would re-tackle that thing and if you know anything about electronic components, check each section at a time CRTs are so easy to fix.

[@jasmijndekkers]

Hi Chris, Nice job again. And i see a mill from Amsterdam from the Netherlands! Nice to see it. Greetings from Steven from the Netherlands

[@matthewlyonsakadeathtodogs5730]

FIrst thing needs to be minded for the insides of a monitor: a discharge probe no less.

[@josephphillips9243]

Thanks for not being stupid Chris. Too many Retro KZbinrs with no experience tackle monitors after reading the manual or watching other clips. Some zealous subscriber might watch, try it themselves and kill themselves in the process. The KZbinr you mentioned is one I unsubscribed to because of one of those very videos....... oh and his fake laugh and persona. There is that corner electrical shop in every city where you can get someone with qualifications and years of experience to examine and try fix CRT's.

[@stansova3138]

did you try turning the brightness and contrast adjusters

[@retrorobban3903]

I opened mine last year and changed the Capacitors and the Power Button. Didnt realize then that the Voltage was that high. :)

[@DarrenJCrawford]

Have you ever noticed that stupid people are happy people. 🙂I'd hold on to the monitor, you never know who may suddenly come into your life that knows how to fix these CRTs. Dr. Chris lives to fix another day.

[@ChrisEdwardsRestoration]

Well, good thing I’m not happy

[@jhfgjtjutyiuod]

@@ChrisEdwardsRestoration Your video's are always pretty mirthful and entertaining and you know yourself well enough to be able to laugh at yourself even with others watching. Definitely not something everyone is capable of. I loved my 1084S back in the day (my back didn't) but I love modern flat screen displays more.

[@winstonsmith478]

What's better than roses on your piano? Tulips on your organ.

[@AmigaMuadib3D]

Good stuff dr.Chris! I have my 1084S stowed away but when I turn it on once a year it distorts when screen/resolution changing. I thought about recapping it myself(have audio vacuum tube experience) but I really have to learn how to de energize the tube. I don't know if its worth the trouble...

[@byrons8956]

I always handed off the hardware shop's monitor repairs to our specialist, as much as I would do is reflow cold soder points.

[@dassrull]

Two MacGyvers defusing a bomb!

[@kingforaday8725]

..........and the agony of defeat! ☹

[@JamesHalfHorse]

My accountant just asked me what the Amazon invoice/PO for "Deluxe Helmet of Goober" was. Thought you would find that amusing.

[@ChrisEdwardsRestoration]

Indeed!

[@DrJ3RK8]

For shame!!!!!! (on not having played Turrican....) :)

[@HoldandModify]

I know, I know. It looks cool too! I missed out!

[@davidwright9166]

What’s the expression? Fools rush in where angels fear to tread. I know nothing but still ventured in anyways. Avoided the touchy parts, but still. No more.

[@pikewerfer]

Do I recognize an Amiga 1000 RAM extension there? 😂

[@ChrisEdwardsRestoration]

yup coming up in the next few videos!

[@chaoticsystem2211]

bon apetit

[@chaoticsystem2211]

not only will it kill you, it will also be very painful :D

[@jjock3239]

You are such a pessimist! You won't explode and die, you'll more likely just go for a trip across the room. :-) I am happy to see that you have a healthy respect for high voltage components.

[@ChrisEdwardsRestoration]

That's why they call it 'high' voltage

[@jjock3239]

@@ChrisEdwardsRestoration I have worked on a lot of high voltage stuff, and always remembered, and sometimes heeded his advice to keep one hand behind my back. That way, you may get a jolt, but it won't send you to the hospital or the mortuary.

[@sulrich70]

Caution expressed when dealing with this thing is very smart and quite educational! Good work sir!

[@more.power.]

Thank you Chris ,Adrian's Digital Basement is the man for monitor repairs. Cheers

[@tokul76]

wow. talking snarky camera. :)

[@Traci_S_Aaron]

Lick your finger and touch it while its own.. ROFLMAO It will just burn a hole on your finger and OMG the smell .. you will be climbling up off the floor sweating and cursing