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Quad 303 repair

jr2joao

New Member
I'm finally restoring my inherited Quad 303!

I'm following this guide:

https://www.rs-online.com/designspark/refurbishing-a-classic-quad-303-amplifier

I've replaced all the capacitors and everything went good ;)

Now to the problem:

Adjust RV100 for 33.5 volts between tags 5 and 9

One of the channels gives me an irregular reading of 38-41v with the pot all the way up. With the old pot setup it was reading 60v.
I only had to make minute adjustments to the power supply pot and the other channel.

What do you guys think is the culprit?

I'm a noob with a soldering iron.
 
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