Have a question. I’m repairing a snap on multimeter that had too much DC voltage go through it and now I can’t measure dc voltage with that meter. After doing some testing I’ve found 2 resistors are dropping voltage without even having current flow. I removed and tested them and their resistance...
Hello everyone, thank you for the existence of this forum.I decided to try to repair a Pioneer SA-540 audio amplifier ( part of an economic system from the 80s ) with almost no knowledge of the subject, but a great desire to learn.
From a careful analysis of all the components on the board I...
I have a Hybrid PB 15" Active Speaker.
It has 2 channels and a Speakon Amp out port.
The speak blew due to an electrical surge. I replaced the fuse, Replaced all 4 transistors (2x A1941 and 2x C5198) I replaced 2 R100 resisters (brown black brown gold) but still no sound.
Speaker Powers up...