Failed JBL Sub 10/230 repair

Given away on FB marketplace as not working. Was not accepting any sources. Simple repair of amp board with just two capacitors replaced.

[@gregorymaine9615]

Thank you for this video, it was a big help in repairing my own JBL Venue Sub10 which happened to have the same problem. Wanted to add a note here though: those two capacitors are actually non-polar, mine were still intact enough to read the labels, so that’s what I put back in there. Works great!!!

[@pescado99]

Thanks for the correction. My caps had exploded and could not be easily read!

[@RolandvanderHeijden]

Hi, I am trying to repair the same board, waiting for the parts to arrive. You’re video was very helpful in opening up my unit. The NP of C16/17 in the schematic means Non Polar, often used in audio.

[@pescado99]

It's been awhile, but I'm fairly certain 16 and 17 were polarized (although they were badly damaged so maybe they are NP). Good luck.

[@kaktusmexico23]

Hi. I have a HK TS-11 sub and I have this problem. When turned on, the blue light normally turns on and the beep sounds for 2-3 minutes and then disappears. Sometimes it helps to lightly tap the panel on the back, but it also helps for a moment. What could be the problem, can you suggest? What to replace? Thanks and regards

[@pescado99]

Impossible to say without a full teardown. There are two boards, a power supply and a HK control board which feeds the power transistors. Suggest you open up and check for obvious capacitor failures first (bulged or popped).

[@kaktusmexico23]

@@pescado99 I am asking because one user on YT told me to replace the elements called "Q501 and Q502" but it is always good to ask for other advice as well;) And as for your suggestions, what you wrote about is all nothing bulging and no burns can be seen, etc. e.t.c.

[@renzobeggia3375]

why does title say failed if it is repaired? ;-) I have exactly the same issue and will try to replace the 2 blown Elco's

[@pescado99]

I say 'failed' because the sub worked briefly during testing (although the green pilot LED didn't switch on and off), and then it failed - the same 2 x caps didn't fail again - something else let go. I managed to get it going again briefly, then it died again. So now it's sitting on my garage floor!

[@renzobeggia3375]

@@pescado99 thanks mate, there is another YT clip showing how to fix a TS11 : replace the 2 big resistors and Caps with higher wattage ones and put cooling on the 2 transistors in the blackened area .. .I'll start by replacing the 2 blown caps. see : kzbin.info/www/bejne/fqTddXeEa62Cebs

[@GatesRapes]

@@pescado99 Go Bash Amplifiers - fix it Right

[@ferryfadli1476]

What MOSFET does this subwoofer use?

[@pescado99]

Not sure. I'd have to open it back up - unless you can identify it from freeze frames..

[@ferryfadli1476]

@@pescado99 I see in your video Q10 IRF9640 Q 11 IRF640 😁