Question about JBL PB12 Subwoofer
My JBL PB10 has several burned out resistors and diods. The Technician I have been working wiht has tracked down 6 of them but there are still 4 more that he cannot find. The location #s are: R6, R9, R10 and D9 on the circuit board. Can you let me know if there is a specific part number for each and where I might be able to purchase them. If you can track down a schematic that would be helpful as well.
For JBL parts and service use the link below.
Depending on the type of parts, JBL usualy only sells the complete boards. For some of their products it is dealer service only, meaning that you have to give the unit to their rep for service. Normaly these units are serviced by circuit board swap.
For the question about the unit that is making a noise, I have had this caused by electrolytic capacitors that became off value from age. You can use an ESR meter to test all the capacitors in the unit. Change all the caps that are out of spec.
If you are not used to doing this type of service, I suggest to give the unit out to the manufacture rep for service.
Posted on Apr 28, 2008
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Posted on Jan 02, 2017
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