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Hi, all.
Need your help.
I shipped my nephew a tubed headphone amp and UPS apparently dropped it and knocked some components loose. Unfortunately, it needs to be soldered on the other side of the circuit board but getting to it (removing the board) is pretty much impossible.
Is there a liquid solder that works as well as hot iron solder in connecting electronic wires to a circuit board? He might be able to access the capacitor legs from the side by using a chopstick or something similar.
Any suggestions?
Thank you,
Mamoru
"Man, that mouse is Awesome." - Kaemon (referring to Jerry, of Tom and Jerry fame)
Follow Ups:
My Carver Cube (M400t) was an electronic Chinese Puzzle Box.
I got a little of it open and realized that I had No Clue how to proceed.....
My original goal was to look at the Choke in the PS and other parts as opportunity allowed.
Too much is never enough
Why are you missing with it? There may be other issues including the loose caps. Let UPS pay for a competent repair company go through it and assure it operates to spec.
Perhaps you can rock them until both leads break. Buy replacements, install with enough lead on them so you can reach underneath them while you solder from the accessible side of the board, then mechanically secure them somehow. The excess lead will generate a minor amount of inductance, but at least the thing will work.
berate is 8 and benign is 9
Can you let us know the make/model of the headphone amp? Might be able to help figure out best way to get at the loose contacts for actual soldering.
Liquid solder may or may not work and perhaps best left as a last resort.
Sorry to hear about the shipping mishap.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
It's a SinglePower MPX3.
With the bottom plate removed you can easily see where the capacitors came loose. That circuit board is screwed into the frame.
There's about 1/4" or so of access space from the side where the pins of the capacitors can be reached. Unfortunately, not enough space to allow a soldering iron to get into.
"Man, that mouse is Awesome." - Kaemon (referring to Jerry, of Tom and Jerry fame)
That's a pretty serious looking headphone amp! Definitely an access service challenge as you say.
I took some screen shots off the web to confirm that it's the same model.
I also came across quite a long thread on another model (link below) that eventually mentions yours. Overall the brand is very highly regarded for sound quality but some caution regarding electrical build faults that may or may not apply to your specific unit. Still it should be heeded for safety reasons to determine what level of service should be done, given the rocky shipping journey.
Beautiful looking unit and I bet it sounds great. Only headphone amp I've ever listened to and worked on was my son's Schitt Vali. Much less complex though he hoped I would totally break it with my DIY skills so he could upgrade LOL.
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Yep. That's the one. The two capacitors on the lower left came loose.
The MPX3 is a fantastic amp. These were built before all the issues Mikhail ran into on his later builds (too much customization and not following thru on all the upgrades folks sent their amps back to him for).
I also have the Supra, Supra XLR and the Maestro ZR. I've had a lots of headamps and the models from Singlepower have been the best, to my ears.
"Man, that mouse is Awesome." - Kaemon (referring to Jerry, of Tom and Jerry fame)
There are electrically conductive 2 part epoxies that are commercially available. Maybe he could smear some of that in there with a toothpick or something.
Thank you.
"Man, that mouse is Awesome." - Kaemon (referring to Jerry, of Tom and Jerry fame)
Solder IS liquid when heated. There should be no problem soldering a component onto the board from either side as long as the wire or legs of the capacitor are in the proper holes in the circuit board. Heat the pad and let the solder flow into the hole.
Agreed. But not enough space for soldering iron to access the pins.
"Man, that mouse is Awesome." - Kaemon (referring to Jerry, of Tom and Jerry fame)
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