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LASERandDVDfan
 
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Default Sony VCR Power Supply

thanks for the info Ron! I will try and replace most of the caps as I
have found out by reading that they are very troublesome in this
particular power supply.


Depends on the caps used. Later variants of this power supply used Matsu****a
caps, which are relatively reliable.

The power supplies that had trouble were the ones that used the Elna LongLife
caps, which are brown in color with gold writing. Your VCR might also have
Elna Duorex II capacitors, which are red in color, and are installed in a small
junction board (if your VCR has it) located underneath the mainboard and
positioned close to the front of the machine and sitting on a metal chassis.
All of these capacitors must be replaced.

I have an SVO-160 which hasn't given me any trouble except for the power supply
capacitors and other caps in the VCR, as well as the capstan bearing warp.
The power supply had to be repaired by replacing EVERY electrolytic capacitor
on the secondary side of the power supply. I also had to look in the VCR for
other leaky caps and, sure enough, there were more. This time, the caps that
leaked in a junction board were the Elna Duorex II caps.

Be sure that the power supply board and junction board themselves are clean of
any leaked electrolyte before installing the new caps to prevent future
problems with these circuits.

If there is anyone that can do this repair
for me please leave a message or send an email. I have problems
soldering small components because of my poor vision.


I could do it for you. I've done it before with my SVO-160. I do recommend
that you ship the entire VCR, not just the power supply. I am willing to bet
your deck may have those pesky Duorex II caps in them, which also are known to
leak and must be replaced. - Reinhart