23-01-2020, 05:43 PM
Hi, I have fixed an avo mk2. I have measured many valves, if they are with few amperes, type ecc83, everything seems to work. If I try valves that should produce a lot of amperes, el36 and El 34, it doesn't measure correctly, all the valves indicate few amps. In the repair I replaced all the diodes with BYT52M, the ea50 with a new one, the capacitors, some resistors. I added two diodes and a 100uf capacitor to the milliamperometer. When measuring without valve all voltages are correct, the digital tester on the back also indicates the correct current. Ideas? Thanks Renato, from Italy.