3 ms·

I've done a lot of repair in my day. I don't have what you need, but at the same time, my experience has taught me that 90% of "electronic" problems are mechani

I've done a lot of repair in my day. I don't have what you need, but at the same time, my experience has taught me that 90% of "electronic" problems are mechanical in nature, such as switches, connectors, potentiometers, and so forth. Once you get into the guts of the amplifier circuit, it gets hard because that circuit is a feedback loop, so the signal can't be easily traced from one end to the other. 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.

sitzkrieg 4y ago
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 https://www.youtube.com/c/Bigclive https://www.youtube.com/c/Bigclive https://www.youtube.com/c/Electronicsrepairschool https://www.youtube.com/c/Electronicsrepairschool
- adolph 4y ago
  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.”
stoat_meniscus 4y ago
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.

sitzkrieg 4y ago

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 https://www.youtube.com/c/Bigclive https://www.youtube.com/c/Bigclive https://www.youtube.com/c/Electronicsrepairschool https://www.youtube.com/c/Electronicsrepairschool

adolph 4y ago
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.”

stoat_meniscus 4y ago

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.