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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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AKAI AM-2850
Hi, I need help with my akai amp, model am-2850. Someone have a
service manual? the protection circuit keeps activating even without signal and i haven't found any short circuits, maybe it's the idle current (i don't know the value or where i could measure it). Thanks |
#2
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AKAI AM-2850
"Luigi DJ" wrote in message ... Hi, I need help with my akai amp, model am-2850. Someone have a service manual? the protection circuit keeps activating even without signal and i haven't found any short circuits, maybe it's the idle current (i don't know the value or where i could measure it). Thanks Is there a DC offset at the output of either channel? Mark Z. |
#3
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AKAI AM-2850
On Thu, 26 Jan 2006 12:17:55 GMT, "Mark D. Zacharias"
wrote: "Luigi DJ" wrote in message .. . Hi, I need help with my akai amp, model am-2850. Someone have a service manual? the protection circuit keeps activating even without signal and i haven't found any short circuits, maybe it's the idle current (i don't know the value or where i could measure it). Thanks Is there a DC offset at the output of either channel? Mark Z. Hi Mark. No, there's no dc offset on the output (i already found out how to set it). This amp has 3 adjusting resistors, one for the dc offset and the other two could be bias current adjust (upper and lower??). I'd like to know what this 2 resistors do, where to measure and how much. I found the am-2600 schematic with some dc values, i'm trying to guide me with it, i'll check this weekend. I'll post something if i can rearrange it Thanks Luigi |
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