Holy mother of TV scores!

[Th3_uN1Qu3]

You won't believe what i picked up tonight. 6 TVs and one montor for $120!!!

In order of importance, there are:

20" Sharp Aquos 720p, bad CCFLs. Guy told me he replaced the inverter and it worked for 1 more year then the tubes burned out.
30" "Sky" 720p, bad CCFLs and/or inverter. Missing some cables too.
22" Dell monitor, CCFL tubes have been pulled to fix a TV.

And here come the big ones.
37" Philips 1080p CCFL, power board missing, no other details.
40" Grundig (Vestel) 1080p LED, powers on with backlight, no picture.
42" JVC 1080p CCFL, tab bond failures, powers on with picture, left side good, middle good but inverted colors, right side good colors but lagging motion.
And the best for last - 55" LG 1080p LED Seems to boot up, no backlight no picture. It's pretty much the big brother of my 37LE5300, it's a 55LE5500. Same kind of combo mainboard/tcon, so it could very well be the main but it's expensive to get. We'll see. But holy crap this sucker is huge.

Besides the JVC all sets also came with stands.

My boss helped me carry them home, it was interesting fitting all this stuff in the car and carrying it home. I'll be back with pics.

The JVC is first up. I'll let you know what i find.

[audiofreak19]

Re: Holy mother of TV scores!

Nice find. I thought I hit it last night when I picked up a 64" Samsung plasma from 2012 so thin for 50 bucks and only thing wrong with it so far is a fuse. If that's it then it's my best score probably ever

[Th3_uN1Qu3]

Re: Holy mother of TV scores!

^^ That must have been a bitch to carry.

The guy i got the sets off told me the Sharp has some weird U-shaped CCFLs and he couldn't find any, so that one sounds like a good candidate for a LED tape retrofit.

For the other ones, they have not been messed with, i'm pretty sure.

The seller let me take the back off the 55" LG and also the Sky and the Philips. He seemed like the kind of guy who has the tools but lacks the experience to use them and he's afraid to mess things up more when presented with difficult failures. He works for some people that bring broken stuff by the truckload from Germany, and they have switched from TVs to audio amps and receivers recently, so he was looking to pawn the remaining TVs to free up some room for other stuff.

[retiredcaps]

Re: Holy mother of TV scores!

I thought I hit it last night when I picked up a 64" Samsung plasma from 2012 so thin for 50 bucks and only thing wrong with it so far is a fuse.

Nice.

I love plasma over ccfl/led. I haven't see the new oled tv yet though for any length of time.

[JeffJ]

Re: Holy mother of TV scores!

I can almost guarantee that LG 55LE5500 has bad LEDS, multiple. Good luck though.

[Moreno83]

Re: Holy mother of TV scores!

Probably bad mainboard also! ( LG TV ).

These mainboards fail with hdmi chip + cpu chip....

[tw2005]

Re: Holy mother of TV scores!

3 out of 5. no Panasonics, no plasmas.

[Th3_uN1Qu3]

Re: Holy mother of TV scores!

I like plasmas too but i don't wanna imagine carrying a 40" or larger plasma by myself.

The LG is going to be the last one anyway, i need to make some $$ from these other sets, maybe i will order a replacement mainboard if that's the issue.

[Moreno83]

Re: Holy mother of TV scores!

The latest Panasonic plasma's from 2011/2012 only weigh +/-25 kilo so thats not that bad haha.

[tw2005]

Re: Holy mother of TV scores!

I like plasmas too but i don't wanna imagine carrying a 40" or larger plasma by myself.

The LG is going to be the last one anyway, i need to make some $$ from these other sets, maybe i will order a replacement mainboard if that's the issue.

Jokes, yeah it's hard to get material to work with. The LG should be nice.

[Th3_uN1Qu3]

Re: Holy mother of TV scores!

I took the Dell monitor into work today as i had to go grab some thermal pads to attempt the tab bond fix on the JVC.

Shining a flashlight on the screen gets this picture, exact same as in the video, minus the horizontal lines at the top i think. https://www.youtube.com/watch?v=DPCzcaTe6Pc

I flashed firmware, no change. Voltages on PSU: OK. Voltages on m/b: OK. Voltages on Tcon: OK. No resoldered components, touched a few tabs with no change. What do you think, CPU or panel? A CPU is $4 from China, maybe it's worth a shot...

[stj]

Re: Holy mother of TV scores!

maybe it's caps.

[JeffJ]

Re: Holy mother of TV scores!

maybe it's caps.

I've seen bad caps do this on a dell monitor as well. worth a dry, test the caps.

[ReeceyBurger123]

Re: Holy mother of TV scores!

Nice score, the 40" will be a VES400WNDS-Samsung Panel. Tcon failure on VES400 Samsung panels is very high could be the panel if it got watered down.

[Th3_uN1Qu3]

Re: Holy mother of TV scores!

Status report:

Ordered both main and Tcon processor ICs for the Dell monitor. $6 for both.

JVC had a single tab failure, driver IC to flex. I messed it up completely, could not be salvaged. Had only one position where picture was fully ok, and it put significant stress on the flex. Tried heating it with my soldering iron, crapped out completely.

Grundig - spent a lot of time on this, measured a lot. Panel gets all supply and gamma voltages from tcon, but does not get certain voltages on the tab driver boards. Mainboard seems ok, takes firmware update but still no video. Scoped signals going in and out of Tcon. LVDS data coming in and changing when i press buttons like menu and source. Clock going out to panel, but the data lines seem all dead. My money is on Tcon failure just like you. I found the Tcon processor IC for $8 on aliexpress... I'll order it.

The big mofo LG, i was able to force the inverter on so LEDs are fine. Tcon part of mainboard does not get power and mainboard does not send inverter on signal. Have not investigated further but i am sure Tcon side doesn't get enable signal like i found on my 37LE5300. So it's definitely a fault on the mainboard.

I still have the old broken board of my 37LE5300, guess it's time to swap the EEPROM chips out between good board and broken to narrow it down to firmware or processor. If i fix the 37LE5300 mb i can fix the 55LE5500 one as well.

I'm out, wish me luck!

[tw2005]

Re: Holy mother of TV scores!

Status report:

Ordered both main and Tcon processor ICs for the Dell monitor. $6 for both.

JVC had a single tab failure, driver IC to flex. I messed it up completely, could not be salvaged. Had only one position where picture was fully ok, and it put significant stress on the flex. Tried heating it with my soldering iron, crapped out completely.

Grundig - spent a lot of time on this, measured a lot. Panel gets all supply and gamma voltages from tcon, but does not get certain voltages on the tab driver boards. Mainboard seems ok, takes firmware update but still no video. Scoped signals going in and out of Tcon. LVDS data coming in and changing when i press buttons like menu and source. Clock going out to panel, but the data lines seem all dead. My money is on Tcon failure just like you. I found the Tcon processor IC for $8 on aliexpress... I'll order it.

The big mofo LG, i was able to force the inverter on so LEDs are fine. Tcon part of mainboard does not get power and mainboard does not send inverter on signal. Have not investigated further but i am sure Tcon side doesn't get enable signal like i found on my 37LE5300. So it's definitely a fault on the mainboard.

I still have the old broken board of my 37LE5300, guess it's time to swap the EEPROM chips out between good board and broken to narrow it down to firmware or processor. If i fix the 37LE5300 mb i can fix the 55LE5500 one as well.

I'm out, wish me luck!

Good Luck, don't forget to come up for air

[JeffJ]

Re: Holy mother of TV scores!

Keep us posted, awesome that LG doesn't have bad leds. Those f**kers are so common these days. Its almost preferred to be anything but LED issue these days. lol

I still have a 47ln5750 apart panel out sitting in my shop. third time blown leds. None available for a good price i almost feel like scrapping it, but apparently a "firmware update" has been released to resolve an issue of back light burning.

Maybe ill do some LED swapping since i have had luck with that.

I love good finds, my best find. Panasonic TC-P55GT30 55 inch Plasma. Watching it right now. Cost me about $15 bux to fix. I picked it up at a local recycling depo not a scratch on it. just sitting there. Man do I LOVE this tv. But i also prefer Plasma picture quality.

[Khron]

Re: Holy mother of TV scores!

I love good finds, my best find. Panasonic TC-P55GT30 55 inch Plasma. Watching it right now. Cost me about $15 bux to fix. I picked it up at a local recycling depo not a scratch on it. just sitting there. Man do I LOVE this tv. But i also prefer Plasma picture quality.

That reminds me of my previous TV, a Sharp LC-46XD1E. Bought it dead for 20eu, spent 1-2 weeks poking around, and another 33eu for a new mobo from fleabay. Last month was its 5th re-birthday

[JeffJ]

Re: Holy mother of TV scores!

That reminds me of my previous TV, a Sharp LC-46XD1E. Bought it dead for 20eu, spent 1-2 weeks poking around, and another 33eu for a new mobo from fleabay. Last month was its 5th re-birthday

That is a good find too. I like sharp as well. Their top end stuff is quality, we Sell a lot of their Panels for pc users for CAD/Design work because of their quality and color/contrast.

[Khron]

Re: Holy mother of TV scores!

It served me well and facilitated many a movie night with friends, as well as serving as extra PC display space (which was its main use). Big-ass 32kg (~70lb) mofo, too

Had to let it go the other month though, due to springing for a cheapo Panasonic 4k

That is a good find too. I like sharp as well. Their top end stuff is quality, we Sell a lot of their Panels for pc users for CAD/Design work because of their quality and color/contrast.