Boiler wont turn back on......

[@mattsan70]

You are 90% there - the startup capacitor is called the bootstrap capacitor and as you say once the psu is up and running it does nothing bit like a starter motor in a car . All electrolytic caps will fail at some point in time - they have less than a 10 year life span.

[@HeatingGeek]

Nice one. Thanks for sharing your knowledge :-) I will pin this

[@HeatingGeek]

I don't know how to pin it anymore :-(

[@cputilitysolutions]

Mate so glad to see you back on here, great video 👊🏾

[@HeatingGeek]

Appreciate it! I decided I will get all the knowledge out there. Anything I can I will put out. Were quiet at the moment, are you?

[@cputilitysolutions]

@@HeatingGeek it is quieter than usual, but it's picked up a bit this past week. Trying to make the most of the quiet time to be fair, more time with the family and kids

[@HeatingGeek]

I agree. It's nice to have some down time. I bet it all comes in at once. :-)

[@steveblanco8812]

Top man, seriously next level momma :D Cheers again for sharing the videos and knowledge Ollie much appreciated. Look forward to and thoroughly enjoying the weekly installments

[@HeatingGeek]

Thanks :-) I like to try and fix everything :-)

[@alineena]

Nice video Ollie, I got net-tec tomorrow, fan constantly running, Monday!! Will defo try warming up the capacitors!!!

[@HeatingGeek]

I hope it works. Good luck, :-)

[@bvqbvq]

There are 3 main places that electrolytic caps are used in a SMPS: 1. The reservoir cap that stores the incoming rectified and smoothed mains. This will likely be the largest cap on the board. 2. The SMPS controller IC start-up supply. The 320Vdc on the main reservoir cap is supplied to the controller via a high value resistor (sometimes 2 in series), this generates about 12V (regulated by a Zener in the control IC) which uses an electrolytic cap to hold the supply up when the chip starts driving the switching MOSFETs. 3. The output from the secondary of the transformer is rectified and smoothed to produce the DC supplies required by the circuit. I have only ever seen failures of the caps in 2 & 3 above. I have heard of failures of the main reservoir cap but never seen it myself. Always replace the caps with good quality branded caps, such as Panasonic, Rubycon, Nichicon, etc. The precise capacitance of the cap is not as important as make sure that the voltage rating is at least the same as the one being replaced. The tolerance of these caps can be as high as ±20% anyway, so fitting 150uF instead of 100uF is unlikely to make any difference.

[@HeatingGeek]

Thanks for the info. I have replaced caps in other equipment and fitted higher temperature and voltage with the same capacitance the replacement parts have outlived the original ones. I get my caps from RS components so generally very good quality.

[@bvqbvq]

@@HeatingGeek RS are a good reliable source, I use them too.

[@s2theeb]

That is a well handy tip to know. Thanks again so glad you back making content again 👍

[@HeatingGeek]

No problem 👍I'l try and keep going every week:-)

[@PlumbLikeTom]

Another great video mate, I learn something every video I watch, thanks for the upload

[@HeatingGeek]

Thanks Tom, I have a couple of yours to watch later today. I always watch your stuff. I want to buy you some gloves though. Your hands must be ruined. :-)

[@Willplumber86]

Great video mate! Had that on a service last year!! Cheers mate!

[@HeatingGeek]

No problem. ;-)

[@keithbrueton]

Great video Ollie.

[@HeatingGeek]

Glad you enjoyed it. This is the sort of thing people do without understanding why. I thought I would share the reason behind the failure. :-)

[@colinjackson320]

Another good one, great information. I dabble with electronics as a hobby & capacitors are very often the culprit.

[@HeatingGeek]

Yeah, I find they last 8-10 years and then play up. :-)

[@john-paulcox918]

Brilliant.

[@HeatingGeek]

No Problem, Glad you liked it. :-) Thanks for taking the time to comment :-)

[@FLYNN..]

Amazing repair on that pcb, great tip to get it working again 👍🏼

[@HeatingGeek]

It saves the day. A simple hair drier :-)

[@paulgardner3926]

Nice one going to remember that one 👍

[@HeatingGeek]

Thanks for taking the time to watch and comment :-)

[@paulgardner3926]

Would you believe it just got called out to a F27 fault! Fan was pulsing thought I try the hair dryer trick! Bingo got it up and running 👍

[@HeatingGeek]

NICE. :-) Love it when I get a comment like this :-). Made my day and your customer was happy to get it back on.

[@colin4685]

Nice bit of knowledge! 👍

[@HeatingGeek]

Glad you liked it! I spent a lot of time trying to understand why things fail.

[@smartboilercompany1983]

Invaluable knowledge to get a customer’s boiler back on 🙏🙏

[@HeatingGeek]

Glad you think so! It saves the day quite a lot.

[@SuperTrooper9000]

WOW, can't belive that, I've replaced many of those PCBs and thecustomer stayed cold until the part arrived.

[@HeatingGeek]

A simple problem with a simple "get you out of jail" solution. Thanks for taking the time to comment.:-)

[@ArifPolicewala]

That was interesting to kno.. as usual Ollie you know what you are talking about n you get the job done❤ thank you..

[@HeatingGeek]

My pleasure!! I just going to try and get all the info I can out there.

[@YoutubeHero666]

Another excellent video :) Thanks

[@HeatingGeek]

Glad you like it. A life save when it works

[@MrSuperheterodyne]

Wow, nice one. Good on you for sharing that information. It might save me or another one of us some serious money some day. You know how it is - "It was working fine till you touched it!"

[@HeatingGeek]

Exactly. :-) Now the toilet doesn't flush and the TV is flickering :-)

[@MrSuperheterodyne]

@@HeatingGeek who hasn't been called to a worcester flow manifold that's been spraying that fine mist for weeks, replaced it, turned on the power and boom - the fan goes pop. 😂

[@HeatingGeek]

@@MrSuperheterodyne It doesn't bother me anymore when things like that happens. It used to but now I just tell people these things happen. I will now tell them to watch my video :-)

[@MrSuperheterodyne]

@@HeatingGeek I'll be honest, it frustrates me. I serviced an oil boiler the other month and the oil pump died a few days later. No way I could have forseen it, as pressure was stable and combustion was spot on. But then the customer will think "why has it failed, it was only serviced a few days ago". I try to suggest the analogy that you can get your car serviced today and the timing belt could go tomorrow. 😂 just one of those things we all go through. Nice to discuss these things though, makes you feel a little more at ease knowing other guys have it happen. 👍

[@HeatingGeek]

@@MrSuperheterodyne Yeah, I even tell customers that turning the power off to some boilers will kill the PCB and it isn't my fault. EcoTec being one.

[@geezer314]

Great video Ollie, you never cease to impress 👍

[@HeatingGeek]

Thanks 👍I appreciate you taking the time to comment. :-)

[@RestlessBs3]

Your full of tricks! Great video again

[@HeatingGeek]

Got to keep moving :-) Have you seen the latest video?

[@RestlessBs3]

@@HeatingGeek Yes I have mate! Been a supporter for years, learnt a lot from you. Hope you make abit of KZbin money for all your effort!

[@HeatingGeek]

@@RestlessBs3 Its not worth it for the time I put in but one day I will leverage it for something... I have no plan, just winging it :-)

[@RestlessBs3]

@@HeatingGeek I got my mum to use your business to fix her boiler in se13 about a year ago as I live in Bristol. She said the bloke that came was a nice person and sorted it quickly. New pcb on an Alpha. I thought your fixed price business model was very interesting, never heard of fixed price repairs before. I gather you’ve moved into commercial (hope the moneys better!), I’d like to do that but can’t see how unless I went and worked for someone. If I was in your neck of the woods I’d be asking for a job!

[@HeatingGeek]

Yeah, I just do commercial now. Stoped doing the fixed price repair stuff too. Just a bit too much management per job. :-)

[@goldfinch4871]

Yes I've found loads of them melted pressure gauge grommets brilliant 😢

[@HeatingGeek]

That must be some shitty plastic. Must be bad for our health to touch it. Surely

[@chrisrixon1364]

great information , thanks

[@HeatingGeek]

You're welcome :-)

[@cdrom_8986]

Good video on that mate 👍 are you going to installer show this year?

[@HeatingGeek]

Yes, 3 day bender :-)

[@deanmais886]

Top tip👍, I’ve changed the pcb on the same boiler with the same problem a couple of time🫡

[@owencoussins]

Back in the day I fixed my PS3 with a heat gun / hair dryer by heating the motherboard... Now I'm adding a hair dryer to my tool kit.... Great video cheers😂👍

[@HeatingGeek]

I done the same with my PS3!!! BGA chip. Lasted about 3 months and then I had to do it again. Then I got a PS4 :-)

[@sidpf1972]

Tbf, standard carrying kit having a hairdryer . Even the best engineer occasionally gets moisture on the pcb, First rule when power off on a boiler,preheat with hairdryer. Do a lot of jobs where properties have been empty for a few months, First thing is to preheat the pcb

[@HeatingGeek]

Yeah, PCBs don't like the cold when they get a few years old. :-) So do you heat the pcb before you even try and turn it on?

[@sidpf1972]

@@HeatingGeek yes 100% Once bitten pal Always now run the hairdryer over board ,and fan on worcester bosch,before i turn on the 240v

[@HeatingGeek]

@@sidpf1972 Its a good shout really. I will bare that in mind

[@melvinevans9981]

That pg looked like someone got excited with it i would ave not touched it 😂 But if you claim limited knowledge i would love to see you @100% respect olie and thanks for your thoughts to approach mate 👍

[@HeatingGeek]

I learn what I need to know and forget the rest. Literally forget everything I don't need to know.

[@brianmcdonald80]

I’ve replaced 13 caps on a biomass boiler board the other day. Worked well and saved the customer near 4k 👍🏻 All caps failed on the ESR meter but multimeter showed fine just low. So you need to have the rite gear

[@HeatingGeek]

Yes mate, 100%. 17 is a lot on 1 PCB. What brand of biomass?

[@brianmcdonald80]

@@HeatingGeek it was a Lindner & Sommerauer 250kw 👍🏻

[@HeatingGeek]

I hope you charged enough :-)

[@brianmcdonald80]

@@HeatingGeek charged like a rhino 🦏 mate 😂

[@yannkitson116]

The electrolytic capacitors dry out because of the heat in the inclosure with no vents. but sooner or later all electrolytic capacitors fail. Baxi is actually the only company I know of that will sell you the capacitors so you can swap them yourself.

[@HeatingGeek]

Really? Where can you buy capacitors for Baxi from? All Baxi PCBs or just some of the more common ones?

[@yannkitson116]

@@HeatingGeek The importer of Baxi boilers used to sell the capacitors, so I would expect them to still do so. However, if you can't get them anymore this is how to find a suitable capacitor in cases where you can't find an identical one: 1. Use a higher capacitance 2. Use a higher voltage You can buy capacitors and other electronic components from RS, Farnell, Mouser, and Amazon etc. even sometimes from a local radio/TV repair shop.

[@HeatingGeek]

Thanks for the info :-)

[@julianhawker7672]

UF (micro farrads ?) on my Fluke Multimeter for cap testing, do it on every service on oil and blown gas motors and change them out when low, before breakdown happens. Often on water circ pumps its only a cap stopping it from starting............. I don't delve into domestic gas pcb's anymore, as the gas police would be on my case.

[@HeatingGeek]

I do check caps on oil boiler motors and find they are often low. I don't know what you mean about UF? Did I say something wrong? I'm not great with electronics so probably did. :-)

[@julianhawker7672]

@@HeatingGeek Dunno about wrong, more ways than one to skin a cat..... UF is the symbol on a Multimeter for microfarads, which is the measurement for testing capacitors. I'm self taught on electronics (basic for boiler repair) with what I've picked up off others and reading up, so I could well be wrong..... I just fix stuff and get by. 😉

[@HeatingGeek]

@@julianhawker7672 Don't we all. :-) Wing it everyday

[@lemmykilmister450]

The rubber grommets on these Baxis pressure gauges turn to sludge, seen it a few times

[@HeatingGeek]

I have never seen this before. I knew if I asked people would let me know. :-)Thanks

[@scotsdunc]

Another good job ollie, hate to think how many different spares u carry on ur van & sounds like u cover a huge area

[@HeatingGeek]

I don't carry many spares tbh. I did carry a lot more but I don't really do domestic work anymore. Commercial parts are way to expensive to carry on the van. :-) What sort of work do you do?

[@scotsdunc]

@@HeatingGeek mostly domestic now, still look after a few church boiler rooms and couple of factories though, cant seem to shake them off. id probably prefer to do more commercial and leave peoples houses to the boiler bashers if truth be told.

[@HeatingGeek]

I try and do the same. I have had enough of working in customers houses. No patience anymore.

[@ivanmarinov6019]

Great video

[@HeatingGeek]

Thanks for watching and taking the time to comment :-)

[@groovejet33]

Today i was talking about how I remove the pcb before any work on the water side. Mainly baxi 105s. As the water finds its way into the pcb case every time 😢

[@HeatingGeek]

This wasn't the case on this one though. Did you watch it? :-)

[@muhammadgreen9711]

Too vid pal…Any electronic channels you recommend watching on KZbin Ollie ?

[@HeatingGeek]

@LearnElectronicsRepair and @DonkeyLearningIT

[@chrisbw591]

Great video again as usual. Interesting you mention about getting into electronics. Are you saying if we had enough knowledge of electronics, we could repair pcb’s? Not sure if trust myself tbh.

[@HeatingGeek]

Not necessarily, if we understood more we could diagnose quicker and get things right more often.

[@Mastergas-r7n]

G.o.a.t 🎉🎉

[@HeatingGeek]

I had to ask my kids what that meant. :-)

[@Willplumber86]

Have to wait about an hour for new pcb to set up combustion aswell ffs!

[@HeatingGeek]

While the whole house is getting to 80c and hot water runs at 8lpm. Hate them.

[@joncoke8208]

Same as a glow worm cxi

[@HeatingGeek]

Exactly. Check out the repair on my mums boiler for an even more CXI issue.

[@joncoke8208]

@@HeatingGeek seen it mate class

[@HeatingGeek]

Nice, thanks :-)@@joncoke8208

[@TheYohtube]

Who was first, heating geek or heat geek? And you both have the same logo flame face?

[@colinjackson320]

Ollie was first, he's been on KZbin for years 😉

[@ryanthornborough1820]

I’ve always wondered that lol

[@SuperWayneyb]

🤘😎🤘

[@HeatingGeek]

Thanks Wayne

[@chrisrichmond5501]

Melting pressure gauge is a common fault on those

[@HeatingGeek]

I have only seen this one. What crazy cancer causing plastic is that? MUST be dangerous....... Have you seen a few then?

[@tomaszkowal3852]

This is what I have been thinking from a long time, hair drayer can help with PCB. Always had at the back of my head...if i fu..ck ..d up something "my co...k will be on the block" so if you not sure don't touch. Thanks for confirmation:)

[@HeatingGeek]

If it's not working then nothing to lose. :-)

[@aaronchapman6994]

I fucking hate these boilers. Stevenage councils full of them along with the megaflo compact GA Arse ache 😂

[@HeatingGeek]

I'm not a fan of them at all. I just absolutely hate the combustion set up. :-)

[@VirginAtlanticflyer]

These pcbs on the GA’s are absolutely dog….

[@HeatingGeek]

The GA is dog sh$%

[@mynameis9739]

First

[@HeatingGeek]

Nope. :-)

[@HeatingGeek]

Actually you were.:-) Good job

[@fargogemini694]

Mate you need to shave inside your nose

[@HeatingGeek]

I cry when the Turkish barbers pull it out. :-(