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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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Tim Marcus:
What about the following: ***the driver and predriver stages? leaky transistors, leaky electrolytics, open low ohm resistors, shorted diodes??? ***the main power supply (+) & (-) rails... filtered and balanced, and the sub power supply regulation circuitry that feed the preamp and driver stages..... correct voltages, filtered and (+) & (-) rails balanced? ***check the input side of the speaker protection relay.... do the left and right channel power stage output have a DC offset? If so, then you missed something, if not, then maybe the protection circuitry has a fault? ***check for cracked solder connections especially near and around the high heat producing parts. -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Tim Marcus" wrote in message om... Model Number is TX-SV414PRO I have replaced the 5 transistors in the output stage, the standup resistor, and a few other burnt out resistors. The thing does not overdraw anymore, however, the relays never click, and it says "Protect" on the front. I have checked everything in the output section twice (resistance measurements, etc) - anybody know what I might be missing? Thanks - Tim |
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