Question about Electrical Supplies
Its a small board part # QO5-21203-808290 WITH 1 RED WIRE AND 3 BLACK WIRES COMBINED IN A SINGLE PLUG CONNECTING TO THE MAIN BOARD
Take the effects loop jack, its 3 wires, and small white female connector out if the back of the amp, install it in the front, might need to cut the black wire farthest from the red wire for ground, and plug connector into white 4 pin box right next to input jack so that the red wire is closest to input jack. You only need 2 of the 4 pins to make circuit, 1st and 2nd closest to input jack. Might need to tweak the wire configuration in the white connector a bit but it worked for me, and without loosing built-in effects.
Posted on Nov 06, 2020
You should be able to get a diagram from the company itself and the circuit board can either be purchased from the manufacturer itself or they can tell you who to call.
Here is the manufacturer's number
BEHRINGER USA BEHRINGER USA Inc.
18912 North Creek Parkway, Suite 200
Bothell, WA 98011
Tel.: +1 425 672 0816
you can also try their online support at
but I would just call them, it would be much easier
Let me know if you need any further help or if they couldn't help you and I will let you know who else might have what you need.
Posted on May 23, 2008
There should be an 8 pin IC close to the input jack that will be marked 4558 or 4560. This is an Op-amp Ic that is the most likely cause of the problem. Replace that IC and report the results here.
Posted on May 28, 2008
that is strange
normally a 3 wire switch could only be able to control 2 things + off. black would be common, red would be one fan speed or set of lights and blue would be the other fan speed or set of lights.
if it is a replacement, couldn't you just hook it up like the switch you are removing?
most likely the black wires are grounds for everything and white would be power. hook it up however you like. white power would hook up to the black wire on the switch and then the blue to one light and red to the other set of lights white wires.
Posted on Jan 06, 2010
the green an yellow wire is a ground. Look for an area on the board with a ground symbol . Can you not match the location from the old board???
Either way the black and red are your positive and negative power, while the third is the ground. The wire probably are located in close proximity to each other.
Let me know if this helps
Posted on Jan 16, 2010
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