Re:What to know to begin fixing amplifiers [video]
by sitzkrieg on Sunday August 14, 2022 @04:31PM
(#32462666)
came to post this, been my experience to a t. always start in places where things move, get plugged in, switches, look for exposed/funky looking traces/boards/connections. almost always an easy win once you crack the thing out (which can be a struggle)
sometimes watching youtubers like bigclivedotcom cover failures of cheap electronics can show spectacular exceptions though. for some more realistic failures of common consumer hardware like laptops and cellphones (and general rework wizardry) Electronicsrepairschool is pretty hard to beat
Re:What to know to begin fixing amplifiers [video]
by adolph on Sunday August 14, 2022 @09:33PM
(#32464917)
Bigclive is the best. Sometimes my mind uses his voice when I’m checking out a circuit board. “What to we have here? A silver metal tube, probably the clock crystal for this kitchen timer. Ah ha, it says 32.768 on the board, so it certainly is.”
Re:What to know to begin fixing amplifiers [video]
by stoat_meniscus on Sunday August 14, 2022 @11:50PM
(#32465686)
At least 90% is mechanical. The list mentioned above plus corroded traces on circuit boards and broken external connectors (RCA jacks, etc.).
For older components, beyond switches/pots the only other things I've ever had to replace are electrolytic capacitors.
In the evolution of my home audio equipment, the amplifiers are all Class-D IC's that are easier to replace at a board level.
Prophylactically replacing things that might be broken can lead to worse problems, especially since a lot of older consumer electronics had relatively delicate single sided circuit boards that were easily damaged by desoldering.