A £5 TV That’s Perfect for Retro: How to Repair an LCD Monitor with Bad Capacitors

In this video, I show you how to repair a Samsung SyncMaster 940MW TV by replacing the capacitors in the power supply. This TV is a great choice for retro gaming enthusiasts, as it has all the inputs you need, such as VGA, DVI, S-video, and composite. You can use it to connect your old computers and consoles and enjoy the nostalgia.
The Samsung SyncMaster 940MW is a 19-inch LCD monitor with a built-in TV tuner and speakers. It has a resolution of 1440 x 900 pixels and a refresh rate of 60 Hz. It was released in 2006 and received positive reviews for its picture quality and versatility. However, some users reported that the TV would not turn on or would shut off randomly after a few years of use. This is a common problem caused by faulty capacitors in the power supply board.
If you have a Samsung SyncMaster 940MW TV that is not working properly, don’t throw it away. You can fix it yourself with some basic tools and skills. All you need are some replacement capacitors, a soldering iron, a screwdriver, and some patience. In this video, I will guide you through the steps of opening the TV, identifying the bad capacitors, desoldering them, and soldering the new ones. You will be surprised by how easy and satisfying it is to repair your own TV.
I hope you find this video helpful and informative. If you do, please give it a thumbs up and subscribe to my channel for more videos on retro gaming and electronics. Also, feel free to leave a comment below if you have any questions or suggestions. Thanks for watching!
With special thanks to Neal from ‪@NLKMediaGroup‬ for the very kind donation/Christmas present!
Ko-fi page
ko-fi.com/morefunmakingit
Amazon Wishlist
www.amazon.co.uk/hz/wishlist/...
SECOND CHANNEL!
/ @morefunmakingit2
Discord Channel
/ discord
More Fun Website
www.morefunmakingit.co.uk/
My Twitterings can be found here
/ morefunmakingit
Facebook
/ morefunmakingit
Mastodon
oldbytes.space/@MoreFunMakingIt
BlueSky
bsky.app/profile/morefunmakin...

[@KraftyLive]

I have fixed hundreds of Samsung screens with power supplies that failed this way back in the day, they were using them in SPAR shops for digital advertising the caps used to pop all the time we had to fit better quality ones with a higher ripple current tolerance to prevent them failing after 6-12 months being powered and turned on 24/7, nice easy fix to be fair kept me busy for 2-3 years

[@MoreFunMakingIt]

These poor screens have had a hard life!

[@tiemanowo]

1:10 Nice assortment of inputs. Really nice for retro usage.

[@albert_vds]

Discharging large capacitors with a proper resistor is a great tip. Even if you suspect/know the board has a discharge resistor on it, it's better than being sure that you just got shocked.

[@ZombieVision]

Nice fluffy soundtrack during repairing the TV.😎Especially the first track!!

[@kyorin6526]

It's good to see you fixing stuff again. Have a great Christmas. I look forward to seeing you having "more fun fixing/making it" in the New Year.

[@MoreFunMakingIt]

Thank you!

[@Jayoldstuff1]

I've got the slightly earlier 4:3 version which i must get round to fixing, It had exactly the same symptoms, getting harder to turn on then wouldn't turn on at all. All SMPSU's made since the 90's and from decent brands will have a bleed resistor on the HV capacitor. the trouble is it can go open circuit so best to assume the cap is charged. I do exactly as you and use a good beefy resistor.

[@NeilFeltham]

Really like the new setup. It's nice to see you back making videos, I've been missing them.

[@MoreFunMakingIt]

Cheers Neil!

[@bluetonic9538]

I've got the same monitor. Purchased last year for £3.99 working. But looks like it might be on borrowed time with the caps. Great monitor to have around with all the inputs, although s-video doesn't look great with my Atari 800xl. Ntsc and Pal compatible too

[@Muldrf]

I have one of that same model that I fixed for those same 4 capacitors about 4 years ago. I like the TV. It was a little odd to find one in the US though. I have never been able to get the SCART input to work though. I have used it with ever other input though.

[@bluetonic9538]

Funnily enough I've just been trying my Atari 7800 with RGB scart through the 7800 gamedrive cart and no signal Tried my sega Saturn with RGB scart and that didn't work either

[@krakenunbound]

Your editing is on point.

[@MoreFunMakingIt]

So is your comment! :D

[@TheOriginalCoda]

I rescued an NEC Multisync from work before they threw it in the skip. Kept it for a few years for when my Spectrum KS2 arrived. Of course now I need it, it doesn't work 🤣Same symptoms as your syncmaster, I'm hoping it's just the PSU, it usually is as the caps are so old now.

[@RetroBytesUK]

I'm getting oddly in to the background music in the first bit of this video. I do love the heat capacity of those bigger soldering irons. I don't have a Hekko, but I do love my old Weller.

[@MoreFunMakingIt]

I'll make you a mix tape John 😆

[@RetroBytesUK]

@@MoreFunMakingIt I suspect your next repair video to be fixing a twin tape deck.

[@MoreFunMakingIt]

@@RetroBytesUK a nice Amstrad tower. Proper quality item 😁

[@Rockythefishman]

Its crazy that caps in what most of us would term modern eletronics are already failing

[@RoyLake]

Another win! Marvellous!

[@jimmy2drinks]

First bit of electrical gubbins I ever fixed was a samsung 206bw with the same bad caps.

[@TheKonsolist]

Those are great! I use a SyncMaster 932 MW in my lab!

[@paulb4uk]

These older lcd tv,s are great with all the different inputs they have and often quite cheap .I replaced some caps in my mates old samsung tv i used panasonic caps that most likely cost more than all the cheap rubbish cap samsung use

[@blakecasimir]

Unusual to see a TV with DVI. I wonder if Samsung initially marketed this as a "TV / monitor" product that serves both purposes. Great fix btw, but I'm wondering if those cables are causing extra loss on your tester.

[@MoreFunMakingIt]

Almost certainly. That's why I showed them in comparison to the new caps using the same clip leads.

[@Knaeckebrotsaege]

Most older, small-ish (up to 24") Samsung TVs had DVI and VGA and were sold as combo TV/monitor units on that fact alone, even though they were usually pretty subpar as monitors. And a lot of cheapo test leads aren't using copper wires, but CCA/CCS (copper-clad aluminium or steel) which has ridiculous amounts of resistance. I've had alligator/croc leads with that stuff and they had something like 3+ ohm resistance at just 50cm length 🤣

[@CitroenGS]

I have the 4:3 one on my lab.

[@TheImperial109]

Every video needs the Batman twirl in it.

[@aaronbuildsa]

@3:00 in .. wait, you mean you don't discharge it by shoving the biggest flat-blade screwdriver within reach across the terminals? :)

[@MoreFunMakingIt]

I deeply dislike electric shocks and that would be really unpleasant for my nervous disposition 😆

[@aaronbuildsa]

@@MoreFunMakingIt I consider myself lucky to have only done it twice in my career.. once was a belt off the back of a CRT tube while changing the fuse - that was Samsung, too, and the fuses would die at 13 months every time. Kept us busy, didn't half hurt. The other time was changing an AT PSU (back when the power switch was on the 240V side); the old PSU switched live & neutral (so DPST switch) but the new PSU only switched live. I mis-wired the live onto two halves of the switch and then grabbed the switch, handily completing the circuit with my palm. Tingly! :)

[@primokarmasilver]

is there anything you can't fix ....besides my heart

[@MoreFunMakingIt]

Yes. I'm no good with knees either

[@ChrisShadowens]

It's been a whiiiiilllleee! kzbin.info/www/bejne/l6PEhmOcj89ppbM

[@MoreFunMakingIt]

😆