Quote:
Originally Posted by zeno
First off thank you for the good prep you did. Some tell you almost nothing.
This looks challenging especially without lots of equipment.
1) if you have an old game or VCR try that through the RF.
2) if you have no inputs hooked up is the OSD stable ?
3) try tapping ( with authority ) the set & see if that effects it.
4) if the manual has a block diagram ( not the schematic ) post that.
It shows the flow from stage to stage & is a BIG help on high end sets.
5) DO NOT go into the service menus at this time !!!
6) when you pull the back take a chassis picture. That helps us remember
a set.
Let us know what you find.
73 Zeno 
LFOD ! |
Hello , my apologies for the late response. I've uploaded a couple of photos for the Chassis PCB as per your request.
Also I've opened up the TV and took out the Chassis ( Main PCB ) and measured voltage rails and they are very low. Secondary all are very low and the main offline regulator IC I've measured it's Vin Supply and it's supposed to be 16V but its 12-13V and it's fluctuating. Please let me know if you have any ideas I'm at a road block
Note: Since I have the service manual, I've used the schematics as a guide but I spent an entire day pulling out suspected components and measuring them ( caps and diodes ) but nothing was out of the ordinary.... please help .....
BR