Grundig V7200

[starbender]

I'm trying to save busted v7200.

Someone messed with it pretty bad. I repaired most of the parts. But I can't be sure about the right side. Because right sidd foil side already destroyed by former owner. Service manual is not show traces clearly.

Is anyone have v7200 here? If so,can you please took pictures of the right foil side?

Thanks

[grunf]

I'm not sure I understand what you mean with "right foil side"... can you post a picture of the defective part?

[starbender]

I mean; bottom pcb traces are destroyed. Service manual has bad scan quality, traces are not clearly visible. So I need something to compare. A photo of undamaged pcb traces for an example. If this is not possible, I have to trace schematic.

20181226_073322.jpg

[grunf]

Here's the link to some pictures I took from my second V7200, not in great condition, hope they can help. Ignore the grey cables soldered and glued...
https://drive.google.com/open?id=1dfAwc ... wxkZkBhfS7

[starbender]

Thank you so much! That will definitely help

[starbender]

Here's the link to some pictures I took from my second V7200, not in great condition, hope they can help. Ignore the grey cables soldered and glued...
https://drive.google.com/open?id=1dfAwc ... wxkZkBhfS7

Still trying to revive this v7200. I'm stuck somewhere..

How hermal shalter wired to the board? Thermal shalter has two cables goes to speaker post socket. I'm not sure if this two cable tied to the same spot on board or not. I seen photos around the web pin 1 and 2 soldered seperately but shorted on board. But pcb schematic shows its not. Anyone knows how it is wired and soldered?

Two channels has same behaviour. I adjust bias to 30mv. But it begins to rise step by step until 100mv. It takes 3-5min to reach this high bias. There is some sort of oscillation i think. Output transistors are tip142&147.