Re: Samsung 50" plasma HP-S5053 No picture y-main issue
Thanks for all the info, I think it is enough to lead me to getting it fixed.
I am pretty familiar with LCD's, but haven't done much on plasmas... so if I don't find anything under the specific model number it is hard to tell what applies and what doesn't....
jaxmoto
Member
Last Activity: 08-30-2014, 06:57 PM
Joined: 12-07-2011
Location:
-
Samsung 50" plasma HP-S5053 No picture y-main issue
Picked up this set today.
- Plugged it in, got a standard blue steady standby light on front
- Powered it on, got one solid click, flashing light, happy Samsung beeps, standby light goes out, NO PICTURE (TV thinks it is on)
- Smelled faint burning, powered it off, got standard Samsung power off beeps
- Opened it up and found on of the chips on the y-upper has a burned pinhole (tested to verify and it got extremely hot almost instantly)
Since then I have (all the noises I mention are very faint, wouldn't hear with rear of tv on)...
- Powered... -
Re: Looking for a new TV, what is a reliable,durable brand?LCD,LED or PLASMA?
Personally I would stay away from any brand that uses LG parts. Vizio, Philips and LG (of course) are ones I know of, and there are more out there.
Every TV I have bought to repair in the last few years (about 15 or so) have had failed LG parts. The 36" LG set I bought new a few years back for $800 had a failed t-con exactly at the one-year mark outside of warranty and the t-con was permanently attached to the panel. The Vizio I use in the bedroom now used LG inverter boards that fried...Leave a comment:
-
Re: Samsung 42" Plasma
I literally have the exact same issue with a Samsung 40" plasma I was helping my father with.
Bought it at a garage sale saying it had the clicking issue, worked fine for a long while when it came home. After a few click issues went to replace all the caps. The click issue only got worse. Went to replace with a "kit" sold online that replaces a bunch of stuff and now it does nothing.
Please update if you manage to find a reliable source for boards for Samsung plasma sets, we didn't have any luck finding one (for...Leave a comment:
-
Re: Philips 42PFL3603D/F7 blowing fuses
Ok here are some more pictures. Like I said, all I know is that it supposedly was a lightning strike.
I wouldn't put so much effort into it, but replacement power boards go for about $100 for this set.
This is the best my camera can do.
The chassis number shows LC8.1U LA...Leave a comment:
-
Philips 42PFL3603D/F7 blowing fuses
I have done everything I can find in testing this thing, I'm at the limit of what I know how to do.
Philips 42" LCD
Bought this TV locally and was told it was knocked out by lightning along with a bunch of other stuff in an old lady's home, so her neighbor was selling off what he could.
Fuse was blown and it immediately blows replacements.
The only obvious damage is the resistor above the fuse which fried (second picture). The rings were fried off so I can't tell what it should be. It tests 5.14k, so it isn't open.
... -
Re: LG 37LH40 screen freezing when cold
Well it appears that those boards, the T-Con, are what is causing the issue. It isn't purely digital distortion in the "bad" state, some of it looks like bleeding and blurriness.
I would try baking them but unfortunately the ribbon that runs to the lcd panel is permanently mounted on each of those boards at the top of the lcd.
At this point it is back together and I'm just going to leave it as-is and hope it keeps going like it has.
On the plus side, thanks to the help of previous posts...Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
None of the caps on the power board are getting hot. The only things that actually do get hot are the chips on the main board, which 2 have heatsinks so I assume they were meant to get that hot.
When you say the T-con.... there is a small board at the top of the screen that connects via the two ribbon cables to the main board, is that the one?
Also, with the ribbons disconnected from the small board on top of the LCD should I be just getting a blank image or would there be digital junk signal all...Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
Sorry for the delay, been sick...
Tried out the voltages. There is the 5.2v which is running very close at 5.19v (tv on or off) and the 20v which is actually running at 21.7v (tv on only). It is impossible to tell if it says 26/20 next tot he plug, but the output ranges on the other side show 20v.
That is a pretty big overvolt but I'm not sure why that would cause the current issue of taking ~15 minutes to operate properly (voltage stays the same when cold/warm).
All the caps are Samyoung,...Last edited by jaxmoto; 02-27-2012, 05:35 PM.Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
Hard to test everything at once so all I got to at this point was physically testing the chips on the main board to see if any sort of pressure caused any difference.... nothing at all.
In looking at how fast the boards heat up I'm now under more of an impression that it may be in the panel itself. The boards are up to operating temps within 3-4 minutes, yet the issue continues. The only thing that heats up slowly is the panel as all the combined parts generate heat.
Will get on the voltage testing in the morning...Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
I'm assuming this is the one you were looking for?...Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
I do have a good digital meter... is there any way to test caps still on the board?
Going to try to put pressure on the chips to see if that helps, probably have to wait till late tonight or tomorrow....Leave a comment:
-
Re: LG 37LH40 screen freezing when cold
I actually opened it up after posting just to make sure it wasn't a popped cap. This TV uses only 2 boards, a combined power/inverter board and a image processing board. The power board only has a few standard caps and they all look fine (I repair small computer LCD's all the time so I know what to look for). The image board uses all solid caps.
Every part of both boards was cool to the touch when I had the back off and when I turned it back on it is fine (had been using it prior).
That is the...Leave a comment:
-
LG 37LH40 screen freezing when cold
Hi guys. First let me say thank you for a great forum, without the knowledge here I would not have been able to fix my Vizio 42 that had bad inverter boards. Just as an FYI I replaced the LC420WU5 boards with LC420WX5 boards and they worked perfect and stay cool.... but it was the info here that led me to the fix.
On to the new problem....
I have had a LG 37" 37LH40-UA LCD tv for 3 years. 14 months ago I turned it on to a frozen screen with junk vertical lines displayed.
I tried turning it off/on, unplugging it and basic stuff and it finally started...
No activity results to display
Leave a comment: