Is my AV amp toast?
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Buzz word

Original Poster:

2,028 posts

233 months

Saturday 2nd May 2015
quotequote all
I have a sony str dh800. A couple of days ago it started to make a pop just after turning on. Today I turned it on and it made a pop again then just went made a very loud oscillating tone now comes from the unit. I have unplugged all the inputs and even moved it to a different plug to make sure it want some weird electrical noise. Nothing seems to work. Does it sound like its failed? Is it a fixable problem or new unit time? Its not great timing I just threw my DSLR in a river last month.

SS2.

14,691 posts

262 months

Saturday 2nd May 2015
quotequote all
If everything other than the speakers are disconnected and the amp still emits a hum, then it sounds like a component within the amp has failed.

Could be something as simple as a failed power supply capacitor but, unless you are a dab hand with a multimeter and soldering iron, then an electronics repair shop is your best bet.

OldSkoolRS

7,085 posts

203 months

Saturday 2nd May 2015
quotequote all
Looks like it was about £300 new, so probably worth around £100-120 used now, which means a repair probably isn't cost effective as it does sound like it could be 'toast'. You might be able to pick up something similar used (perhaps a Denon given the other thread on here recently with lots of owners of very old Denons, myself included).

I don't know why you would throw a DSLR into a river though, just seems silly to me. wink

Buzz word

Original Poster:

2,028 posts

233 months

Saturday 2nd May 2015
quotequote all
Yes, constant hum with no inputs at all, just the speakers hooked up. I think it is capacitor related as it takes maybe a minute or so after start up before a deafening buzz starts. I hadn't thought of taking it to a shop though I normally just fix things myself but this is probably more than a screw in unit which is my electrical limit. I have dropped it in to the local place now so hopefully find out what it was soon enough.

I was browsing trying to work out what a replacement would cost and bumped into one I like, coincidentally a Denon AVRX2100. If the shop says its uneconomical I think that's where I'll be looking. I like the idea of something robust.

Yep, throwing it in was super silly. I still feel that way but lesson learned about cheap tripods.