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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Behringer SL2442FX , mixer desk, 2004
This 24 ch mixer has been "repaired" twice for a very rare random fault.
Recurs months after being "repaired". Loss of L channel output at the XLR. Previous person had obviously looked at the most likely suspect of the 1/4 in sockets for insert , with bypass contacts and XLRs thmselves. Both Main/Sub push-push switches, 4 pole C/O are very suspect in the FX sections, half a mm pushing when out will loose the effects component of L or R channel and a bit more, full loss of one or both channels. Any other suspects to check? I'm surprised the schema are out there but minus smps so some details taken, just in case. switcher driver ? (reverse of pcb not explored) maybe designated 04N68, TO220 , usual 0/O possibility (obstructed viewing) other marking maybe 1M360 |
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