Metz 72TC76 chess on the screen ??

[EraseR]

I need help reparing my TV Metz 72TC76 Classic pip 100hz
I have problem with picture...
Sound and teletext is working but I have chess ,white and black square board on my screen :shock: , PIP is ok working menu on tv is ok too.
I think is defekt or error in Display procesor SDA 9280 or TV-memory SDA
9251-2X ??

Please I dont have a schema (chassis) for my Metz 72TC76 PIP 100HZ!

Chasis is 696G1

PLEASE HELP ME !! THANKS !
<a href="mailto:**********">**********</a>

 

[unid]

Leider kann ich nur schlecht englisch schreiben. Daher meine Antwort auf deutsch.

Ich hatte diesen Fehler auch schon. Der Fehler liegt auf dem KS - Modul.

Ich werde morgen in meinen Unterlagen am Arbeitsplatz nachschauen, wo genau der Fehler liegt und melde mich dann.

 

[TV-Troubleshooter]

KS-Modul

Remove KS-Modul.

 

[EraseR]

Pictures of problem on TV

http://download.tron-inter.net/test/tv/7F.jpg

http://download.tron-inter.net/test/tv/7F.jpg

This is my problem on TV !

pip ok
ton ok
teletext ok

 

[EraseR]

When I remove pins on TDA 4780 there no picture but pip is working!
How to check BS modul chips SDA 9280 , 9290 procesors and memory SDA 9251x2 four of them!

Help 5.2 V is OK SDA 9290 is very veryHOT!?

How to insert RGB signal from pip to TDA 4780 to ignore BS Modul ??

 

[EraseR]

When I remove pins on TDA 4780 there no picture but pip is working!
How to check BS modul chips SDA 9280 , 9290 procesors and memory SDA 9251x2 four of them!

Help 5.2 V is OK SDA 9290 is very veryHOT!?

How to insert RGB signal from pip to TDA 4780 to ignore BS Modul ??

 

[EraseR]

FIXED Error!!!

Fixed error on Metz 72TC76 Classic pip !
Error is ITT VPC3210!
But now I have new problem I lost OSD and VT video text ??

HELP