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HK avr347

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kloz75

New Member
So I picked up a avr375 from goodwill for $25. It powered up so I figured why not. So a few days later I start testing.
The volume knob doesn’t work but the volume goes up and down when I used a universal remote.

there is no video from any the rear inputs but if I use the front input it works.

mine of the cooling fans was unplugged from the board so I plugged it in. but I haven’t heard it come on. Ware should I start. I don’t mind a change and for 25 bucks what have I got to loose
 
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kloz75 said:
So I picked up a avr375 from goodwill for $25. It powered up so I figured why not. So a few days later I start testing.
The volume knob doesn’t work but the volume goes up and down when I used a universal remote.

there is no video from any the rear inputs but if I use the front input it works.

mine of the cooling fans was unplugged from the board so I plugged it in. but I haven’t heard it come on. Ware should I start. I don’t mind a change and for 25 bucks what have I got to loose
Click to expand...
Cool I never seen a avr at my local goodwills despite many trips
 
kloz75 said:
what have I got to loose
Click to expand...
Well, your time, for one. AVRs, even older models like this, are not particularly easy to work on, especially for a beginner which it sounds like you are (as am I, and I'd never attempt something like this, especially with video issues). Signal switching is all done via relays or silicon, so it's not like there are switches to clean.

The fans are most likely temperature controlled, you won't hear them unless you're driving it hard.

If you can get sound out of it, maybe your best bet would be to forego the video switching portion and feed it S/PDIF from your components. Use your TV for switching video inputs.
 
You can pull the ribbon cables straight up via the blue plastic pieces (i.e. grasp the ribbon and blue piece between thumb and forefinger and carefully straight up). But before you start replacing parts, you should determine if that bad transistor is the cause of the problem, or a symptom.
 
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