Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

[dskall]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Here's one
https://www.badcaps.net/forum/showth...057#post743057

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Currently trying to do this 200 setting test. Everything just appears on the screen as "1" soon as I release and put the probes together figures are just all over the place and goes back to 1.0. If I move or put the probes together hard the results are even higher.

I don't know if I'm doing the test right or doing something wrong. There is no T-Con connected nor power supply connected. Just trying to measure blind but results are definitely not correct and frustrating to say the least lol

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

in the end gave up on the 200 Resistance test. The results made no sense at all and all I was getting was "1" when the probes was on the SMD and when I probed them together the numbers were fluctuating all over the place depending how much force was used to put the probes together. Either I'm doing something wrong or the multimeter is f****d?

TVs been apart that many times most screws are now missing and don't lock into the threads anymore lol.

[budm]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

"Currently trying to do this 200 setting test. Everything just appears on the screen as "1" soon as I release and put the probes together figures are just all over the place and goes back to 1.0. If I move or put the probes together hard the results are even higher. "
'1' is not the same as 1.0.
'1' = over range.
'1.0' = 1.0 Ohm which is the resistance of the meter probes when you touch the probes together.
So what does your meter show when you touch the two probes together? <1 Ohms?
You are seeing '1' because the caps are not showing the sign of shorted circuit, if they are dead short then the meter should shows about the same reading that you get when you touch the two probes of the meter together. We are are looking for shorted out caps, but if the resistance readings are showing '1' on them meter that means the resistance between the two legs of the cap is higher than 200 Ohms. May be you should read your meter user manual to understand what '1' means on the meter.

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

"Currently trying to do this 200 setting test. Everything just appears on the screen as "1" soon as I release and put the probes together figures are just all over the place and goes back to 1.0. If I move or put the probes together hard the results are even higher. "
'1' is not the same as 1.0.
'1' = over range.
'1.0' = 1.0 Ohm which is the resistance of the meter probes when you touch the probes together.
So what does your meter show when you touch the two probes together? <1 Ohms?
You are seeing '1' because the caps are not showing the sign of shorted circuit, if they are dead short then the meter should shows about the same reading that you get when you touch the two probes of the meter together. We are are looking for shorted out caps, but if the resistance readings are showing '1' on them meter that means the resistance between the two legs of the cap is higher than 200 Ohms. May be you should read your meter user manual to understand what '1' means on the meter.

I understand '1' is over range Budm. But I was looking for a result with the probes put together after having them on the SMD to which I was just getting crazy random results which didn't make any sense.

So basically if all SMDs remain at 1 when testing on the board then they are ok is what I assume.

[budm]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

So far your test result does not show shorted caps.

[dskall]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

You can try with tv on and check for any components getting hot on panel board

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

So far your test result does not show shorted caps.

I didn't actually test all the SMDs bud. I was just going off what the probes were doing and aborted the test as I was reading into what the probes were doing too much when I put them together.

You can try with tv on and check for any components getting hot on panel board

Tried this also bud. Nothing's got hot at all besides the T-Con which was really hot to the touch even after just 10-15mins on!

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Quick update and done the test on the Resistance 200 setting and everything resulted in "1" which I assume all SMDs are working correctly or current is still getting through them!

I guess next steps is to remove 1 SMD by 1 and test when off the board?

[vinceroger69]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

maybe easier too get some freeze spray and freeze the areas your working on and see if anything gets hot

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

maybe easier too get some freeze spray and freeze the areas your working on and see if anything gets hot

Had the TV on for 15-20mins the other day mate but nothing on the panel seemed to get hot. Just the T-Con that nearly burnt my hand it was that hot lol. Don't know if it was supposed to get that hot :|

[int0x13]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Hi there, i got the exact same problem with my UE50EH6200AW. I replaced t-con board but no result. When disconnecting the righ side ribbon, i got half picture and other side blank and with both ribbon all is black. I guess it's a well known issue by Samsung because we all have the same issue. They should tell us what's the problem, it's a shame on those high end TV.

[Andrew F. Ali]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

That is a Panel issue. There could be some shorted MLCC on the Left Panel Bd. that attaches to the Panel with FPC ribbon, usually brown in colour. Some have a chip in them and that short out, you would feel it getting very hot to the touch, if that is the case.

[int0x13]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

That is a Panel issue. There could be some shorted MLCC on the Left Panel Bd. that attaches to the Panel with FPC ribbon, usually brown in colour. Some have a chip in them and that short out, you would feel it getting very hot to the touch, if that is the case.

So you say it's a panel issue? But after you say it could come from a SMD cap on the buffer board? I'll try to use external PSU to see if it's getting hot, but i've measured every cap and there is not short with the continuity meter.

[Ridahz]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Hi Guys.

Seen some replies so I thought I may aswel pop on. I still have the TV lol. Not touched it since I last posted really.

The ribbons do have some sort of chip inside but as far as I can remember they do not get hot to the touch at all. Would be nice to see it up and running again as it’s such a good TV and would save me splashing out a hell of a lot more money but I don’t think I can give the info required as I’m not fantastic with a multimeter with all the settings and how to measure etc. Last time I tried I kept screwing up looking like a right noob lol

[nomoresonys]

Re: Samsung UE50H6400AK Panel or T-Con? Has Backlights And Audio

Are the batteries good in meter? put it on 20 vdc and test a new battery, should be a steady reading.