|
|
Post by kendog2020 on Nov 16, 2022 23:25:08 GMT -5
Hi all,
I have an SR-8100 that has faithfully served me for years. I did have to send it in for service when it experienced the power issue several years ago and it was working well until recently. Here is my issue:
The amp has developed a hiss at around 4.6 to 4.9 kHz when it’s on. At first this went away as the amp warmed up for several minutes, but now it is constant. It isn’t super loud but obviously it bothers me.
Has anyone experienced this issue? I am anticipating opening it up and looking for suspect capacitors, but I don’t really have any leads other than that. Any ideas?
Thanks!
|
|
|
|
Post by 405x5 on Nov 17, 2022 10:36:52 GMT -5
Too old to bother with.
Have peace of mind and replace the amplifier.
|
|
|
|
Post by leonski on Nov 24, 2022 1:02:50 GMT -5
#405 has a reasonable point with ONE possible 'dodge'.......
If a Tech will look at it....and it'll take a schematic AND a scope.......And a signal generator?
THAN quote you a price which is Reasonable.......than you MAY consider.
But this may be a bad semiconductor.....Leakage, maybe......
Will the builder PART with a Schematic or will they be a Horses Ass.....??
Decide going IN how much it's worth to you for a fix. If NOT? Sell for parts, unfortunately.....
|
|
|
|
Post by vcautokid on Dec 4, 2022 18:24:19 GMT -5
You could be at the point it is time to re cap your amplifier. It may not solve the issue. Could be also a noisy transistor too. You have decide if shipping, labor and parts are worth the investment. Any competent tech should be able to trace down the noise. The cost versus worth comes in here of course. Getting another amplifier is certainly an easier solution. Also that solution gets you going with new with a warranty on it. Also buying another buys you time if later you decide to get this one fixed when you want and have this amplifier working again for another room, or project maybe.
|
|
|
|
Post by leonski on Dec 4, 2022 23:56:30 GMT -5
You could be at the point it is time to re cap your amplifier. It may not solve the issue. Could be also a noisy transistor too. You have decide if shipping, labor and parts are worth the investment. Any competent tech should be able to trace down the noise. The cost versus worth comes in here of course. Getting another amplifier is certainly an easier solution. Also that solution gets you going with new with a warranty on it. Also buying another buys you time if later you decide to get this one fixed when you want and have this amplifier working again for another room, or project maybe. Decent suggestion. but I'd add a couple minor things. Get clear with any repair tech IF the estimate is deducted from the final bill IF you go ahead with the repair. Also? MENTALLY set an upper limit to the cost. Be prepared to walk away if you think.....200$ and the tech comes back with 450$. Caps in regularly used gear should go 20 years or more. And ONLY buy 'tier 1' caps. Look up what I mean. The choice is from 5 or 6 or maybe a few more.....companies. |
|
|
|
Post by 405x5 on Dec 5, 2022 12:53:41 GMT -5
I have just a few final thoughts regarding amplifier repair on a personal level…
In my experience, I’ve gone through this twice. The first time I had an amplifier repaired, it was an amplifier that was under warranty so of course I use that pathway, and I was successful, the second time was an attempt at having one that was 10 years old repaired. The results were short-lived and problematic and in retrospect hardly worth my time and effort so that’s it. I won’t bother with the amplifier repair ever again on something that’s a decade old simply isn’t worth it the other thing, and perhaps the only exception is if that amplifier that’s up there in years will be serviced by the original manufacturer, which also seems to be rare or nigh impossible
|
|
|
|
Post by 405x5 on Dec 5, 2022 13:05:19 GMT -5
There is also a humorous side to all of this, at least for me.
When my current amplifier reached the ripe age of 10 years old, which was around 2011, I started drawing my plans for the “what if “scenario.
Even so far as taking a ride that year with my wife to visit this electronics repair service, which was about 10 minutes away from my house.
so I logged that one and in the meantime, nothing is ever gone wrong with that amp. which is now 22 years old And still delivering the goods the same way It did in 2001. So at this point if and when it blows, I can put it out for Monday’s trash with a clear conscience as I go happy shopping. the way the performance of this thing is knocking me out, It appears that that’s still a very long time away.
|
|
cawgijoe
Emo VIPs 
"We made too many of the wrong mistakes." - Yogi Berra
Posts: 4,918
|
Post by cawgijoe on Dec 5, 2022 13:07:18 GMT -5
I have just a few final thoughts regarding amplifier repair on a personal level… In my experience, I’ve gone through this twice. The first time I had an amplifier repaired, it was an amplifier that was under warranty so of course I use that pathway, and I was successful, the second time was an attempt at having one that was 10 years old repaired. The results were short-lived and problematic and in retrospect hardly worth my time and effort so that’s it. I won’t bother with the amplifier repair ever again on something that’s a decade old simply isn’t worth it the other thing, and perhaps the only exception is if that amplifier that’s up there in years will be serviced by the original manufacturer, which also seems to be rare or nigh impossible My exception would be an old Mcintosh or some such. They hold their value and if Mcintosh can't do it, there are other repair places that can. |
|
