Question about Mackie Audio Players & Recorders
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Posted on Jan 02, 2017
SOURCE: mackie swa 1801 power amp
You likely have other parts blown as well, but Q3 (MJE15033) AND/OR r8 (1 OHM/0.5 Watt) are blown. I suspect that Q3 has a base-collector short and you will find several of the output transistors are fried as well Q4, Q5, Q15, Q16. I suspect that the Zeners D14, D25 may be blown.
When restarting this, put a 100 Watt lampin series with teh 120 volt power to limit current and avoid destroying freshly repaired parts due to a few bad ones not found.
Posted on Aug 11, 2010
SOURCE: no sound
Hi my name is MIchael and I repair the following amps JBL PB10, PB12, TSS-1100, TSS-1200,PS12, PS12, E250P, SUB12 Venue. If it has the screw near the on/off switch. If your amp is blowing the fuse, has bad sound, no sound, doesn't power up or if the output is low or muffled. We can fix it - please check ebay and search WE REPAIR PB10 PB12 - you will find us ... Edwards Electronics ....
Posted on May 24, 2012
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