Samsung PS-42D5S - LVDS Cable issue

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Called Emos 5 times today, no reply, just get VM. No reply to my email either.

I count in total approx 15 missing SMD components across the board and 4 Electrolytic caps.

Any half decent inspection of this board would have shown it was not fit to send out to a customer. The board literally looks like scrap. Solder mask scratches everywhere.

I will wait another day for a reply and then just reverse the paypal charges.

edit -

I initially thought the missing components were limited to the board area around the LVDS connector which was severely damaged. On closer inspection there were SMD components missing from all 4 corners of the board. There was no pad damage or other obvious damage to the board other than the minor scratches that look like the board was stacked with others. The components literally looked neatly pulled with hot air from the board.


Rant over

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Ahh its bank holiday

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

Ahh its bank holiday

yes i just realised this too as was awaiting some rs component parts too come

[ReeceyBurger123]

Re: Samsung PS-42D5S - LVDS Cable issue

Things like that piss me off, for example if a Tv noob who just replaces boards brought that assumes its working they would then replace more then probably give up. Don't understand how hard it is to send a board working fucking ebay sellers !

[dick_barton]

Re: Samsung PS-42D5S - LVDS Cable issue

I sell on ebay and the last thing I want is a sale returned to me so I check carefully that what goes up for sale is in working order. I don't want the negative feedback or having to then cover the returns postage charges.

Yet I have had several items returned as not working which on retest are fine. It is impossible to stop people buying blindly in the hope that the part will cure their fault but if it doesn't then just say it doesn't work and ship it back at my expense.

We see all to often on this forum that there does tend to be a tendancy to throw parts at a repair in the hope that sooner or later it will be up and running.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Spoke to emos this morning, they are sending out another board and I can keep the old one

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

Thats good they have one in stock hopefully this will sort the issues out on your set.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Got another mainboard today that I ordered of ebay. Identical to the one enroute from emos.

This board is very dusty though and covered in dead moths lol, definitley needs a clean before use. I dont have much hope that it will work.

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

You maybe suprised give it a clean then give it a try.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Cleaned it. TV comes on, even has the startup chime but nothing on screen, panel does not even light up.

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

if you run the test pattern does that work correctly? or still nothing

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

I could never get test pattern to run even with the original mainboard. I jumper pins 3-4 on control board and unplug LVDS from mainboard.

Tried all combinations and no test patterns.

I will try again with this new mainboard.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Tried test patterns again, screen does not light.

the control board I have is pictured below -

https://spares2repair.co.uk/images/p...20MAINASIC.jpg

I am jumpering pins 3-4 on cn2038 and unplugging the LVDS cable from the mainboard side.

Any idea if this is correct procedure for this control board? What is the SMD switch for?

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

Have you still got another board on order from emos for this set?
if so just send this board back too ebay as it certainly looks faulty.

[ReeceyBurger123]

Re: Samsung PS-42D5S - LVDS Cable issue

Well then try the old board sounds like you brought another dud.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

what comes in to play when running test patterns, I am assuming the test patterns are generated by the logic board and sent directly to the panel, so the mainboard does not really come in to play.

Other logic board should be here tomorrow from emos, I will test with that and then decide what to do.

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

has the logic board got a flashing led?
ive no idea how to run the test patterns on these not sure if reece knows ive had a quick look online but cant find much info regarding the test pattern set up.

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Yes there is an LED, steady flashing on and off. I will check what it does when I try and run test patterns

[ocf]

Re: Samsung PS-42D5S - LVDS Cable issue

Flashes the same with test pattern setup

[vinceroger69]

Re: Samsung PS-42D5S - LVDS Cable issue

Im not sure maybe another member has ran test patterns on these sets and will advise you on how too do it correctly, all you can do is wait fot the emos board too come and hopefully it works ok