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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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#1
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Fender SPL 9000 , 1997 slave amp
About half the solder joints on the input sub-board are bad. A .25 and M&F
XLR each ch with no obvious reason why, as all sockets are individually fixed to stout chassis metal . Even the never been used quarter inch sockets have bad solder joints. The solder looks good otherwise. |
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#2
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Fender SPL 9000 , 1997 slave amp
Probably the sockets were soldered onto the pcb without laying on a jig. So
misaligned when fixed onto chassis. So inbuilt stress in board combined with the board being in the internal hot air flow to the fan |
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#3
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Fender SPL 9000 , 1997 slave amp
unbalanced "reference planes". insulated 1/4 in i/p sockets . Lipped
insulator washer and star washer inside chassis but only the insulator washer packing lines up with XLR rear faces, just that 1/10 inch or less enough to stress the board/solder |
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