Question about Sony MHC-GX9900 Shelf System

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I just got this from some scammer on ebay.. He said it was NEW and Guaranteed against DOA. But it came completely DEAD! Wont even turn on at all. what do i do to fix it?

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Power runs about 107 /wo shipping

Posted on Oct 05, 2008


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Posted on Jan 02, 2017


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Hooking a sony ghc-gx99 to bose speakers

If you already have speakes running, adding the Bose will probably get your system into trouble because they operate at a low impedience, around 4ohms.

Apr 30, 2012 | Sony MHC-GX9900 Shelf System

1 Answer

I have a mhc-gx99 the sub is not attached. we were playing it pretty loud for about 10 minutes and it just quit. the standby light is now flashing? if i unplug it it will restart and play for 10 or 15...

Chances are, yes, it did overheat. You may have blown out a solider joint on the High and Low voltage supplies. Possibly even weakened them to the point that they need replaced. It would even be wise to test your Left and Right Channel amps.

Aug 23, 2011 | Sony MHCGX99 Shelf System

1 Answer

Hi I have a Sony MHC-EC99i when I plug in the power cord it show "Protect" even I had nothing is connected to the unit,what shall I do now ,thanks.

If it's showing 'Protect' without any Speakers connected then you've got a fault with the Amplifier.

Depending on your Technical ability you could remove the outer case and have a look at it yourself. It could just be blown Capacitors on the Amplifier PCB or could be worse and require complete new PCBs if they are available for this model.

Jun 06, 2011 | Sony MHC-EC99 Audio Shelf System

1 Answer

I have a Sony mhc gx9000 unit but I don't have da original speakers or wires how can I use it with normal speaker wire. Speakers

I would recommend against it. The system is sold as a package with proprietary connectors for a reason.

You'll notice there are no facilities for balancing the relative volumes in the electronics. After-market speakers of unknown sensitivities would be impossible to match if it could even drive them sufficiently loud.

Jan 16, 2011 | Sony MHC-GX9000 CD Shelf System

3 Answers

Why do my sony mhc-gx450 cd shelf system power lights keep blinking

This usually indicates faulty wiring, or miswiring. Disconnect the wires, one set and turn the unit off and on to see if that elimates your problem. If it does, the wiring or component is at fault. If you disconnect everything and have the same problem, it's an internal fault with the unit and will have to be troubleshot. Get and estimate first, to evaluate whether or not it's economical to keep, or replace with a new one. Good luck, hope this helps.

Mar 25, 2010 | Sony MHC-GX450 CD Shelf System

1 Answer

No power

sounds like you power supply died.

purchase one of the ebay (make sure you get one that is guaranteed to work and the seller accepts returns if DOA)

Jul 31, 2008 | Sony Playstation 3 (PS3) Console

2 Answers

Ps3 power supply

Ya what is the model size? 20 40 60 80?
ebay is the best as people like me will list parts that have a doa refund (dead on arival refund) so you know it will work!

Jun 20, 2008 | Sony Playstation 3 (PS3) Console

1 Answer

How can i hook up my Sony Mhc-Gx99 to my pc?

ok ive got one of these leads go to any hifi store or computer store and its a headphone jack with a red and white conetor on the other side there very in price from $5-$20 it depends how long and wat brand if u need ANY more help go and send me a message at

Dec 31, 2007 | Sony MHC-GX9900 Shelf System

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