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TA-4650 TA-5650 voltage doubler modification

Tim5

Active Member
Hi there,
Need some advice about the mod, more specific about how to mount the diodes at C414, c415, c416.
For the 4650 the location of these diodes is C402, C403, c404?

20170507_105604.jpg 20170507_105356.jpg
580830d1479544056-sony-ta-5650-voltage-doubler-mod-sonyvoe.jpg
 
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Sorry to interrupt your question, but I have an alternative solution in mind, I want to remove the unstable difficult voltage double caps on the +75/-75 pre vfet supply lines (for a 4650 and 5650 I am trying to restore) and substitute them with two 2x28VAC 4VA trafo's, rectifiers and cap's. Fixed voltage....
Is that also possible?
 
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