Anybody handy at fixing things?

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GEBBY44
GEBBY44 Posts: 939
edited June 2008 in Electronics
A friend has a great old receiver, a Marantz SR-18, that won't power up and that he would sell for $100. Does anyone know what the likely culprit would be with something like this and how much it would cost to fix? I've never fixed a receiver. Pleeeeeease help.
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2008
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    Did you ever open it up and look for a burnt fuse? Watch out for sticking your fingers in there caps hold juice for a while.
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • GEBBY44
    GEBBY44 Posts: 939
    edited June 2008
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    I haven't even seen it. My friend is a few hours away so I won't be able to see it until he come next weekend. I would suspect that it just got shorted somehow and blew a fuse. Those Marantz's have fairly good build quality so I wouldn't suspect anything really major to be wrong with it.
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  • billbillw
    billbillw Posts: 8,108
    edited June 2008
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    I wouldn't call that an "old receiver". That's a fairly new unit. Maybe 8-9 years old? These receivers are very very complex and a 'not powering on problem' could be just about anything wrong with it. Fuse(s), relay(s), protection mode due to bad output section, or a bad chip/resistor/diode on any of the multiple PC boards that are withing that receiver.

    First thing you would need is the service manual. Don't expect that manual to have a trouble shooting section that would be any use to you, BUT, it does have part numbers, and diagrams of the unit and would show you where test points are on the schematics along with the expected voltages/signals.

    I dug deep into my Denon AVR-4802, which is most likely less complex than the SR-18. Its not for the faint of heart. Stacked boards, ribbon connectors, etc. Sometimes it takes 1 hr of dissasembly to get to the board you need to test. Then you need a special cable to be able to test the board out of the receiver. If you get to that point, its probably wise to send it to one of the Marantz/Denon super service centers (or maybe even to their own service group)

    But, for $100, it is probably worth looking at. It might even be worth taking to a shop if its something more complex that you can't figure out. It was a "flagship" receiver and they are usually worth fixing.
    See profile for rigs. Nothing else here.
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  • GEBBY44
    GEBBY44 Posts: 939
    edited June 2008
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    Thanks, bill. I'll probably just take it to a service center and get an estimate, although they sometimes charge out the **** for just the estimate. But I think that if I could get it fixed up for around $300-350, it would be worth it to me. Thanks for the help
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  • fossy
    fossy Posts: 1,378
    edited June 2008
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    keep us updated on it -- I always like to hear of the good deals
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