Samsung PS-50C96HD - No picture - help needed

[Paul-G]

Re: Samsung PS-50C96HD - No picture - help needed

Thank you for the comprehensive response that pointed me in the right direction.

I remembered having a bit of trouble connecting the cable from the Logic Board to the Y-Drive board. I opened the connector and carefully reseated the cable. It had been taped down at a slight angle so was tricky to fit.

This is hard to admit but I made a basic rookie error. As I checked the board I spotted...... I had not connected the power connector! WHY? I have no idea.

IT WORKS!!!

What a fantastic picture. Hooked up my Raspberry Pi and watched a 1080 episode of Planet Earth. Fantastic quality. It is a totally different experience from our old 27" CRT TV.

THANK YOU to everyone who contributed to this fantastic result.

A warning to others
I am skint and thought I could save a few bob by buying a cheap, broken TV and repair it. Surface mounted components stopped that line of thought. Cascading failures (Buffer taking out Main taking out Power) escalated the cost. Initial research found buffer repair kits for a few quid. In the end it has cost me over £260.

If you have a set you spent hundreds on then repair it. Other than that - buy new with warranty!

[tw2005]

Re: Samsung PS-50C96HD - No picture - help needed

I'm sure you're relieved. We all make rookie mistakes, sometimes the most simplest things are overlooked because of exactly that. They're so simple they don't enter the mind as being an issue.

Process of elimination, gather the evidence you do know.

As for the cheap broken TV / restoration. yeah, you have to do the research first. A lot of TVs have common faults, then have to locate parts, availability/cost/postage etc or if you have the skills and gear component level can be fun but tricky.

This particular model repairing the Ymain, no problem and cheap enough at component level, the upper buffers are expensive and difficult to source , ok for the skilled with hot air I guess, not me.

They're getting on a bit , hope you get a bit of life out of it.

[sleepyhead]

Re: Samsung PS-50C96HD - No picture - help needed

Nice one Paul glad you sorted it out your post has been real helpful to me.
I have a similar problem with my samsungPS50-C96HD.
Left telly on,fell asleep when woke up there was no picture,just sound.Can switch channels but only get sound.
Looked in local paper for tv repair man,he quoted me £170,with out looking at it,said it was common problem with this model.
Was inspired by your post/photos so i whipped the back panel off and had a look around Didnt really have a clue what i was looking for.
Eny how i noticed on the smps board couple of capacitors had raised/bevelled tops like they had blowin.
V4a 25v 1000uf
V2a 25v 1000uf
V2a 25v 470uf.
Will try to get pic up later when get camera.
My abiltiy is very low at this kind of thing,but have nothing to lose.

[sleepyhead]

Re: Samsung PS-50C96HD - No picture - help needed

Spoke to tv repair man.
He tells me that replacing these three capacitors will not solve my no picture problem.As the no picture will originate from Y board and buffers would have to be replaced as well.Would he be right?
Is it worth the cost of fixing?

[tw2005]

Re: Samsung PS-50C96HD - No picture - help needed

Spoke to tv repair man.
He tells me that replacing these three capacitors will not solve my no picture problem.As the no picture will originate from Y board and buffers would have to be replaced as well.Would he be right?
Is it worth the cost of fixing?

1. yes,

2. no, but all depends on what a new TV is worth or what they sell used. personal choice really.

you'd have to refurb that PSU too with fresh caps and a reflow on the common joints that crack and blow that up.

I'd rather look out for a faulty 2009 panasonic FHD plasma( 50PZ80/800) with 2 or 10 blink fault and replace a tiny cap on that for a superior product.


170 quid equate to over $350 AUD. I have 1 of these and i can't bring myself to spend $100 in parts to bring it back

[sleepyhead]

Re: Samsung PS-50C96HD - No picture - help needed

Thanks.
Ended up buying new tv samsung 48"H6400 3D smart.

Wasnt sure what to do with the old one,sell for parts??
So having a good look at it and noticed a cable (CN4000) on the x-drive board was not attached some how worked it self lose going to put it all back later and see if that was causing the no picture.

[Shadeyman]

Re: Samsung PS-50C96HD - No picture - help needed

One thing to be careful with are those E,F,G buffers at the bottom which I would not mess with. This is the model I learnt what happens if you reconnect the power cable to those boards whilst there is residual charge after the PSU is turned off.

They get spiked and blow(non repairable chips on the panel ribbons)
There is a aluminium strip that sits across those too(heatsink) I thought was just a bracket, they fry quick smart and same deal, dead panel.

Check out the attached photo.

[sordids999]

Re: Samsung PS-50C96HD - No picture - help needed

Collected one of these tonight free
Top buffer IC burnt
All fuses on Ysus and Zsus ok but fuse F803 on power supply blown
Had a spare buffer so changed but still trying to work out what else is blown on the psu