Mackie PPM608 / C300z PA Package "pcb location" Questions

...dirty and must be cleaned. To do this you have to disassemble the keyboard, carefully remove the PCB under the whole keyboard, locate the not sounding notes, remove tre siliconic stripe with the ...

PCB when the key is pressed. Clean or Replace the strip and all should hopefully work again. Part is either WF212202 or WF212402 depending on the location of the faulty note. https://www.beckettsmusic

...of the Transformer... not the primary... The Primary winding has internal thermal fuse. Fuse on PCB is 3 amp. Im working on one now that has a blown U3 ( IC output

PCB when the key is pressed. Clean or Replace the strip and all should hopefully work again. Part is either WF212202 or WF212402 depending on the location of the faulty note. https://www.beckettsmusic

...not. You could try to locate it by knocking gently with the plastic end of a screwdriver on the pcb. If vibrations cause the noise you could check all solder points optical or just resolder them. ...

...you've isolated the fault.Order a replacement board from Mackie, the part number is on the PCB.From memory it's something like "002163-00" or something, but now you know what the part ...

Location on the circuit board is near the transformer and on back edge or board behind the 2 brown wires connecting to the board and to the side of the 4 diodes there. I left the bad fuse in place and

I can not locate the fuse for a ppm608 amplifier It is located on the Power Supply PCB next to the ac line voltage plug.

...contacts. The sound is switched by pressing a key which in turns press a carbon contact on the PCB under the key. In time these wear out and need to be replaced. Firstly open up the keyboard and ...

...flawlessly. Ive cleaned footswitch jack.. Ive also looked for any bad solderingcold on back of pcb, Thanks in advance for any help Jim ...