UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Repair of 1959 WEM Copicat guitar echo unit

MerlinMags · 3rd Jan 2018, 11:02 am

Thank you for these suggestions. I will look into all of them at the weekend.

I assumed the components in the AC-to-DC converter were functional as I could measure 160V DC in the right place, but perhaps the AVO (multimeter) was not truly releaving how stable/erratic the 'DC' was?!

We did not test the capacitors at high voltage; we just stuck the meter across them to check for the obvious signs of a breakdown.

Yes, I am sensibly terrified of these voltages, and aware that the Copicats have no earthing.

Will report back in a few days...

3rd Jan 2018, 11:02 am	#5
MerlinMags Retired Dormant Member Join Date: Jan 2018 Location: London, UK. Posts: 2	Re: Repair of 1959 WEM Copicat guitar echo unit Thank you for these suggestions. I will look into all of them at the weekend. I assumed the components in the AC-to-DC converter were functional as I could measure 160V DC in the right place, but perhaps the AVO (multimeter) was not truly releaving how stable/erratic the 'DC' was?! We did not test the capacitors at high voltage; we just stuck the meter across them to check for the obvious signs of a breakdown. Yes, I am sensibly terrified of these voltages, and aware that the Copicats have no earthing. Will report back in a few days...