FET Audio | Hi-End Audio & Electronics DIY Electronics & Repair

December 9, 2021

hp 339A distortion meter

Filed under: Test Equipment — Spencer @ 2:09 pm

I acquired this machine for more than 10 years and was defective due to transformer spoilt (super hot) and burnt fuse about 3 years ago.  I did not have time to repair it since then.  Recently I saw a transformer on sales on ebay and thus I purchased it and make replacement.  Reason for the failure is the capacitors C320 and C321 short circuit in the power supply section.  I put back two film capacitor 0.68u 63V type.  Here are the photos of the repair for reference.

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