Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
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...
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