Sharp LCD picture color problem Tcon or main board?

[anomaly]

Hey I have a sharp lcd tv thats been acting weird lately. The picture seems like has more red and magenta colors on it. Like everything is tinted mostly near the red. I tried to reset the color settings on the menu but it doesn't change anything. I tried to decrease the red hue on the menu to almost zero and it helps, but its still a little noticable.

Also everytime I turn on the TV I would get random colored lines, but they disappear whenever the picture is moving. I thought it was a panel issue but when I open the main menu, the lines do not affect it and stay under the menu screen.

So is this a tcon or main board issue? I already tried reseating the cables to the tcon board.

[tom66]

Re: Sharp LCD picture color problem Tcon or main board?

On which inputs does it appear like this?
Have you tried HDMI to see if it is the same as composite, etc?

[anomaly]

Re: Sharp LCD picture color problem Tcon or main board?

There are 3 HDMI ports that I tried all 3 and it all has the same problem. I haven't tried the others yet

[anomaly]

Re: Sharp LCD picture color problem Tcon or main board?

I would guess most likely that these two problems (vertical lines on screen) and the red hue are being caused by one faultly board. If that were true, would it be the tcon?

[tom66]

Re: Sharp LCD picture color problem Tcon or main board?

If the menu appears over the lines, it can't be the t-con. It's very likely to be the main board in this instance.

OK, try this -- may sort out issue. Have had an odd picture problem with a Sharp before, otherwise, they seem pretty reliable. This fixed it:

With the set in STANDBY (RED LED lit) press and hold on the console controls CH- and INPUT.

Then press POWER switch down and wait 10 seconds. Release CH- and input. The set will them power up normally. A small "K" will shortly appear in the top corner of the screen.

Then press VOL- and CH- on the top controls, the service menu should come up.

Scan through the menu pages using the UP and DOWN d-pad controls on the remote. Scan through until you find the page with "EEP CLEARB". Select it using the channel buttons. Do not select "EEP CLEAR"; it must be the "B" variant. Press volume up to select and then enter, wait a few seconds and it should be done.

Then scroll through the rest of the menus and select "FACTORY INI"; select Euro for European version, haven't tried other things yet. Execute the option and wait about 10 seconds. Then power off the TV and power it back on again. You'll need to retune it, but it should work fine.

[anomaly]

Re: Sharp LCD picture color problem Tcon or main board?

I also already tried the Factory Ini the other day but it was no help.

I'll try out the "EEP CLEARB"

[anomaly]

Re: Sharp LCD picture color problem Tcon or main board?

I can't seem to find that function. I can only see:

EEP save
EEP Recover
Standby Cause Reset
Setting for Adj

Should I try EEP recover?

[tom66]

Re: Sharp LCD picture color problem Tcon or main board?

This might be a newer or older model. Mine was LC-32SD1E, just a 720p, 32" LCD.

What is the model number? I will try and find a service guide for this set and upload it.

[anomaly]

Re: Sharp LCD picture color problem Tcon or main board?

its a LC-C5255U

[vinceroger69]

Re: Sharp LCD picture color problem Tcon or main board?

this member may have some boards if you need them
https://www.badcaps.net/forum/showthread.php?t=23281

[tom66]

Re: Sharp LCD picture color problem Tcon or main board?

Unfortunately I could not locate a service manual for this model.
I do not know if EEP RESTORE or EEP SAVE could be the right option but maybe it is worth trying?