100 kohm
Testimonial: "Thanks Keith, I found the electrical schematics and R-17 was 56 Ohms."
SOURCE: problem fith mackie swa1501
Hi There, If you can send a pic to info (delete this bit) at (delete this bit) londonspeakershop.com then I should be able to assist you with getting the replacement part. Best Grant
SOURCE: Mackie SWA1501 Base Bin - Circuit Boards burnt.
They are not publicly available. Mackie authorized service centers are the only places that will have that information. The amp (if it has failed) requires a bit of skill to rebuild, and up to 100$ in parts alone. (not including the speaker driver if it's blown). I have repaired several of these in the past, and they aren't that simple. There is also a service bulletin about 2 diodes that usually need to be swapped with one another because of a defect during manufacture (the parts were installed incorrectly). (One is D20) if you rebuild the amp, and fail to address the diodes, it will fail again very shortly.
SOURCE: Any idea why my Mackie swa1501 bass bin has blown
does your swa1501 get hot just being switched on ?
sounds like your output transistors breaking down or your dc to dc rectifier is shorting this would dumping high voltage to the speaker. I guess your speaker coil is burnt . check Q4,Q5,Q7,Q12.Q14,Q15,Q17 and Q18 these are all mosfet transistors that commonly break down..
SOURCE: nesecito urgente el diagrama electronico
Saludos,
Tony
SOURCE: mackie swa1501
the wires get shaken loose from the constant vibration and you'll need to get a saudering gun and check each connection. especially on the panels.
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