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Old 2nd May 2009, 05:36 AM   #1
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hatrack71's Avatar
Join Date: May 2009
Location: Helena, MT
Default Spectro Acoustics 500 problem

I have recently acquired a Spectro Acoustics 500 that instantly blows the line fuse when powered up. The front display lights would also come on for a split second. However when I try to power it up now, no front display lights and the fuse trips more quickly. This amp has removable transistor modules. I removed the modules and tried to power it up to check for a bad transistor. Still nothing. I suspect the problem to be the bridge rectifier or the transformer itself. What other checks can I make? Also info on this amp is very scarce, how can I identify proper replacements? the transformer says Tinker Bell and the numbers 104-0013 and 8831977. The bridge rectifier says DB 2504. Can anyone help me with this repair? The amp is rated at 250 watts/ch and I feel is worth fixing. Thanks, Kyle
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Old 2nd May 2009, 11:45 AM   #2
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east electronics's Avatar
Join Date: Jan 2006
Location: Athens GREECE
Default without knowing

the particular amp ....it does sound like a rectifier also that the display blinks fro a sec also support that is the rectifier cause the display may be operated from another rectifier . and another winding .... go ahead measure it see what is goinng to happen
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