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Old 24th October 2012, 05:01 AM   #1
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Default help with adcom 555 amp left channel death

hi. im probably not qualified to be on this thread seeing as ive never even taken the cover off any of my equipment, but here goes..I was hoping someone could help with a recent problem with my Adcom 555. i have owned it for 20 yrs or so and been more than happy with it...no modifications, no problems till now. The power switch stopped working ages ago but just have it plugged into the switched outlet on pre amp to turn on off.

recently however, the left channel has stopped working. thiught st first it was the cheap speaker selector it was hooked to, but tried switching channels from preamp as well as bypassing preamp altogether by hooking source dirctly to amp, to no avail. speakers are fine, but nothing coming out of left channel.

theres only one repair shop in town that works on these and they have a several week month backlog...

thanks
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Old 24th October 2012, 06:13 AM   #2
kevinkr is offline kevinkr  United States
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Moved to solid state
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Old 26th October 2012, 01:57 PM   #3
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Pop the lid and check the fuses.
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Old 26th October 2012, 02:22 PM   #4
SY is offline SY  United States
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Quote:
Originally Posted by djk View Post
Pop the lid and check the fuses.
99% chance that's it. If you have a voltmeter, you might want to check the output for DC- if there's more than a few millivolts, you've almost certainly lost one of the power supply rail fuses.

Make sure it's unplugged and that the filter capacitors have had a few minutes to discharge before poking your fingers around inside!
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Old 19th November 2012, 06:25 AM   #5
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not sure how to locate fuses and what tomreplace with?
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Old 19th November 2012, 10:42 AM   #6
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Open the lid. If it's not obvious, close the lid and let someone else do it- you don't want to risk damaging it in an expensive way, or for that matter, damaging yourself!
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