Re: Samsung LN46A500T1FXZA fixed

Another thank you to budm! Recently trash picked a Samsung LN37A550P3FXZA with all the symptoms mentioned in this post. Removed old C102 and replaced with a 100uf@35V I found in my stash. TV is now working fine!

Re: LG42CS570 Screen Acts Like It Needs To Warm Up

How about trying to heat up different boards (or parts of the boards) with a hair dryer to see if you can narrow down or confirm the bad part / board?

If you heat a section up, power it on and it works right away - bingo!

Re: Vizio VA26LHDTV 10T Solarized Picture



I assume I'll need a schematic to direct me to where to test these Gamma voltages?...

Re: Samsung LN46C630K1F



Take a look at this info. [url]https://www.avsforum.com/forum/166-lcd-flat-panel-displays/1369717-samsung-lnt4661f-trouble-after-latest-firmware-update.html[/url]

I know this isn't the same model number as your set but you might look up service menu parameters for your set. It deals with issues after firmware updates, but I've had to do the same thing after main board replacement. Many sets (possibly yours) use the same main board for a bunch of different models with various types of LCD screens so the main boards you are acquiring...

This older Vizio has the problem you see in the attachment below. It has the TCON board integrated with the LCD panel so troubleshooting is somewhat limited. When the main board to TCON cable is disconnected, a white screen with no other artifacts is the result.


I thought I would pass this by the forum to see if anyone has fixed this problem by replacing the main board. What say you?...

Re: Samsung LN46C630K1F

On a few of the Samsung's I've put a new main board on, I've had to change various service menu parameters to make the board match the the TV model you're putting it in.

Not many hits on this model here on this forum, so I thought I'd add one. Found this TV in the trash. Fired it up and it appeared to work fine. Tried it again the next day and nothing - just the white power-on led on the front turned on. Pulled all the caps on the power board and checked them with my Fluke 26III meter - all checked good. Then I noticed the solder connection on the drain of Q1702 FET (TK5A50D) looked flaky (it was the only one of three leads that had the eyelet mount thru the board.) I probed it while power applied and the set came to life. Re-soldered all the eyelet connections...

I have a Philips LCD TV that has the symptoms pictured below. I opened up the set and reseated connectors, which didn't change the symptom. No parts have been replaced. I'm fairly certain it is a bad LCD, but I wanted to pass it by others to get their opinions.

The pics are showing the set displaying an OTA channel with normal sound....

Re: New Members - please post your introductions here

This would be the "required" new member unlock post for me.

I've been fixing stuff for 50+ years. I'm also a man of few words.