I was playing paranoid on my bass for fun and then during the song, my bass amp just cuts out. The amp im using is an acoustic B15. I tried switching chords, i plugged my bass into a tuner and
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HELP BASS AMP IS NOT WORKING!
- Thread starter typeonegative43_
- Start date
I'm sorta upset as it appears the OP was abducted by aliens prior to completing his post in #1.
Last words were "I plugged my bass into a tuner and..." Okay, scrap the aliens theory...he's been thrust into a parallel dimension. Petersons are known for that.
Riis
I thought that was his way of emphasizing "nothing." Maybe it occurred to him to plug it in.
Maybe his/her thought processes got switched to another subject. He/she is only 13 after all. We all remember ourselves at that age! 
OP, if you are still having problems or if you have resolved the issue, please let us know. We worry!!
OP, if you are still having problems or if you have resolved the issue, please let us know. We worry!!
Last edited:
I own an Acoustic B20 that would act flakey...the board-mounted input jacks are terrible. I switched them to panel mount jacks and it fixed the issue. The OP's issue may be completely different, so this probably isn't too helpful.
Sorry Bro but every little bit of new information IS helpful. Maybe the unit is different from yours but the failure modes could well be similar.
I've been an amp tech for decades, and also collect small practice amps. I haven't worked on a B15 but I suspect it uses the ubiquitous TDA2030 power amp chip. a five legged little device one can buy for under $5...usually well under that.
These things blow all the time, because kids (and adults) push the amp into distortion and play until it fries.
When I repair one of these, I remove the blown TDA2030...solder sucker or solder braid and clean soldering iron, and usually replace it with a slightly more robust TDA2040. No more power with the same speaker and voltage, but I've replaced a lot of 2030's and never a 2040.
Before I bolt the power amp chip back to the chassis or heat sink, I will make sure there is enough silicon grease, which aids the heat transfer, and often add an additional heat sink...usually just a strip of aluminum bent to fit...maybe three inches long, and 1/2" wide or so...16ga or whatever...and use silicone heat sink grease.
You could pay someone a bunch to fix this, or if you or a friend can solder, buy a TDA2030 or TDA2040 and replace it. There is usually enough grease to mount it in the amp, especially if you scrape some off the old chip.
I expect you will open the amp, and if you can see the chip (5 legs, metal tab...) you will likely not see the writing as the heat will have taken it out.
At 20 watts, your amp may have a 2040. Just replace with the same. If it's a 2050, buy one of those. I've upgraded 2040 amps to 2050, but often the power supply isn't enough to deal with the 2050.
These things blow all the time, because kids (and adults) push the amp into distortion and play until it fries.
When I repair one of these, I remove the blown TDA2030...solder sucker or solder braid and clean soldering iron, and usually replace it with a slightly more robust TDA2040. No more power with the same speaker and voltage, but I've replaced a lot of 2030's and never a 2040.
Before I bolt the power amp chip back to the chassis or heat sink, I will make sure there is enough silicon grease, which aids the heat transfer, and often add an additional heat sink...usually just a strip of aluminum bent to fit...maybe three inches long, and 1/2" wide or so...16ga or whatever...and use silicone heat sink grease.
You could pay someone a bunch to fix this, or if you or a friend can solder, buy a TDA2030 or TDA2040 and replace it. There is usually enough grease to mount it in the amp, especially if you scrape some off the old chip.
I expect you will open the amp, and if you can see the chip (5 legs, metal tab...) you will likely not see the writing as the heat will have taken it out.
At 20 watts, your amp may have a 2040. Just replace with the same. If it's a 2050, buy one of those. I've upgraded 2040 amps to 2050, but often the power supply isn't enough to deal with the 2050.
