Question about Behringer Pmp3000 16 Channel Audio Mixer
I tryed to turn on the amp and it wont cause the fuse was blown. replaced it with the same fuse 250v 6.3A and turn it on again and a burn smell came out of it. i turned it of, cheked the fuse, the fuse was ok but the unit wasnt worknig
BIG problem! You should NOT have replaced the fuse as additional damage has been done. I repaired a PMP5000 and I can tell you likely what you will find: The smoke and smell came from two power resistors that are part of the soft start circuit that now are toast. You will likely find several components in the main portion of the power supply that are toast. These will include transistors, resistors, diodes, and probably the small 8 pin switching regulator chip. There is a small power supply that comes on first which enables a relay that shorts out those soft start resistors AFTER the power amplifier BALANCES and normalizes.
The unit I repaired had severe damage due to arc-over at one power amp section. Three power transistors were destroyed there and board traces and charring had to be handled in that section.
The repaired unit had to be brought up with a light bulb in series with the line power cord to prevent further damage until all bad parts were discovered and repaired. You will need to take the unit to a shop that is expperienced with the product. The repair cost MAY be pretty high.
Posted on Jul 28, 2009
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Posted on Jan 02, 2017
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