Those dang solder joints. I have an AIWA subwoofer that's no powerhouse, but for my needs I love it. I have had it since 1987 and replaced the driver years back because of foam rot. It automatically powers up when it sees a signal across the speaker lines. One day it stopped working. I figured it must be bad caps. I checked the caps, and the all seemed fine....bummer! I started poking around and I wanted to do some voltage checks. There was a voltage regulator that was positioned in such a way that the legs were very hard to get to, so I decided to bend it over slightly to get better access. The thing just flopped right over. I soldered it back into place, and the unit has been working fine since. I NEVER would have found that without physically moving it.
They all have the solder joins at the boards fail, and almost never the power supply. You get assorted power supplies, with the board capable of fitting them all, from a simple resistor for low voltage use, to the capacitive dropper, to the universal range ones having a small SMPS board fitting into the internal volume.
Those dang solder joints. I have an AIWA subwoofer that's no powerhouse, but for my needs I love it. I have had it since 1987 and replaced the driver years back because of foam rot. It automatically powers up when it sees a signal across the speaker lines. One day it stopped working. I figured it must be bad caps. I checked the caps, and the all seemed fine....bummer! I started poking around and I wanted to do some voltage checks. There was a voltage regulator that was positioned in such a way that the legs were very hard to get to, so I decided to bend it over slightly to get better access. The thing just flopped right over. I soldered it back into place, and the unit has been working fine since. I NEVER would have found that without physically moving it.
Connections and bad caps cause way too many problems. Haad some crusty "blobby" marginal soldering joints. Looks much better now. Great repair!
They all have the solder joins at the boards fail, and almost never the power supply. You get assorted power supplies, with the board capable of fitting them all, from a simple resistor for low voltage use, to the capacitive dropper, to the universal range ones having a small SMPS board fitting into the internal volume.
4:52 please don't annoy the supervisor at work 😁
👍😊
Good job...thanks 👍
If all else fails reflow the shit out of the circuitry.!!!!!!!!!!!!!!!!!!!!!!!!
But why did you even consider reflowing those joints if they looked okay?
Just a last ditch effort, and it worked!
:o)❤