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VCR Telefunken 2931E power supply / regulator board

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Ka-lin
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Hello,

My son found a good looking old TELEFUNKEN 2931E to the near trash bin.
I didn't want to throw it away, so I decided to test it. Unfortunately, it turned out to be a problem - the power supply part does not work, and there are traces of а previous interventions.

On the regulator board, near transformer.

I managed to find sort of manual, but its different to this particular model. There are some difference in regulator board, where the main problem is located.

Can someone help me finding a service manual for this VCR?

Thanks a lot!
Kalin

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zsugori
zsugori picture
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1

Ka-lin
Ka-lin picture

You helped me a lot, thank you very much. I didn't know this is the same unit as Telefunken.
You are awesome!

1

torokj
torokj picture

Hello Kalin,
The block diagram of the regulator IC.
Its a japanese VCR model with "Telefunken" logo.(JVC or Sanyo)
 

File csatolás: 

1

Ka-lin
Ka-lin picture

Thank you very much, I will test the stabilizer later.

But I'd like to test the board, as there are some burned resistors and diodes, and Im not quite sure if the small transistors were replaced also.
Only the clock of the VCR starts to illuminate, the unit cannot be switched on.

 

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