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I'm not a happy camper Santa.
Christmas eve and Massive Attack is playing at about 70-75 db in the other room. I notice I slight burny smell as I pass the stereo on the way down the hall, then buzz fart and a channel drops out.
A quick check under the hood reveals that what I think is an output transistor (NEC 2sb600) is having itself a little BBQ at its own expense...and mine.
I am not a happy camper as the output stage got hot and failed in August when stupid me shorted out the amp by incorrectly wiring the sub to the high level connections on the power amp. This time the amp had been running about 6 hours and was warm rather than hot (it was really hot last time).
Maybe I just got unlucky with my 30 year old amp - last time the service guru said it was in good condition and looking inside (below) there is no sign of bulging or discoloured components,apart from the fried transistor.
Last August the service guy said he did not believe in hooking up subs to the high level connections as it impacted on the performance of the main speaker. He also told me I was shorting the amp, and Rel confirmed that I was doing this when I reversed the connections (+) to (-) in my attempt to compensate for a phase reversing pre-amp. I corrected this by connecting (+) to (+) as per the Rel manual, then reversing the phase switch on the sub.
I am wondering if the sub is somehow still shorting the output section, although the symptoms are different to last time so probably not. Anyway I hope all can be resolved as I am saving for a CD player to improve the sound, not for a power amp that may do little for my ears.
Fingers crossed that this is just an unfortunate event that can be fixed for $100 bucks. Either way it is a shame my system is stuffed just when I have a bit of time to enjoy it. :cry: :cry: :cry: :cry:
Christmas eve and Massive Attack is playing at about 70-75 db in the other room. I notice I slight burny smell as I pass the stereo on the way down the hall, then buzz fart and a channel drops out.
A quick check under the hood reveals that what I think is an output transistor (NEC 2sb600) is having itself a little BBQ at its own expense...and mine.
I am not a happy camper as the output stage got hot and failed in August when stupid me shorted out the amp by incorrectly wiring the sub to the high level connections on the power amp. This time the amp had been running about 6 hours and was warm rather than hot (it was really hot last time).
Maybe I just got unlucky with my 30 year old amp - last time the service guru said it was in good condition and looking inside (below) there is no sign of bulging or discoloured components,apart from the fried transistor.
Last August the service guy said he did not believe in hooking up subs to the high level connections as it impacted on the performance of the main speaker. He also told me I was shorting the amp, and Rel confirmed that I was doing this when I reversed the connections (+) to (-) in my attempt to compensate for a phase reversing pre-amp. I corrected this by connecting (+) to (+) as per the Rel manual, then reversing the phase switch on the sub.
I am wondering if the sub is somehow still shorting the output section, although the symptoms are different to last time so probably not. Anyway I hope all can be resolved as I am saving for a CD player to improve the sound, not for a power amp that may do little for my ears.
Fingers crossed that this is just an unfortunate event that can be fixed for $100 bucks. Either way it is a shame my system is stuffed just when I have a bit of time to enjoy it. :cry: :cry: :cry: :cry:
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