Question about GPX C979 Cassette/CD Boombox

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Will not come off standby mode

We were given a used gpx979. Unit will not operate using AC or batteries. Neither the CD, radio or tape system works at all. It does absolutely nothing. The only light that comes on is the standby light. We do not have the remote control for the unit. Any recommendations?

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Re: will not come off standby mode

Hi probebly the power button is bad try pushing relly hard or be creative (hammer and such..) or open the unit( unplug it first!!) and try connecting manually the power line if not the processer of the unit is dead and that is the reason way you got the unit in the first place.... good luck

Posted on Mar 16, 2006

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The radio module unfortuneately is defective and given the price of what you can buy them for, I would opt to go that route.

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Unit will not work on AC power but does on batteries. Power outlet is good, power cord is good. Are there any external resets on the unit.

Not unless you see something labelled so - but power supplies don't tend to work like that!
It's either power supply circuitry thats died but it may have a replaceable long life internal fuse which a workshop (repairer) can replace, and should be real cheap to do.
Otherwise, for indoor use, to save on batteries, get a universal AC to DC adaptor. I think you'll find it has a DC IN socket somewhere about it (back or sides)

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I can't get any volume from the boombox. It's like the volume is muted for all functions. Any suggestions?

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Hope you are satisfied with my solution.Thanks for choosing Fixya.

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Works on batteries. does not work on ac. If you leave cord in it and turn off ac it still will not work, but if you take cord out of the unit it will then work on batteries.

If the AC cord can be removed from the back of the radio, then there is a mechanical lever inside where the AC cord plugs into the radio. That lever will cause the battery connection inside to be open (or disconnected) so that it will run off AC and not blow up the batteries. That is why it won't run on batteries when that cord is plugged in.

If it runs on batteries but not AC, find another cord to try. Most radios use about the same cord. If a second cord still doesn't make it work, it's most likely a fuse inside for the AC circuitry. they are usually mounted on a circuit board inside the radio right near where the AC cord plugs into the radio.

You should be able to take the radio apart (while it's unplugged from AC of'course) and find that fuse. If your good with a soldering iron you can replace the fuse. Replacements can be found at Radio Shack. If your reading these instructions to begin with, your probably not good with a soldering iron and you should just buy a new radio. Good luck.

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Hello db1964,

I have a cdf-e75 that had a similar problem, although the red power light was dim for all functions. (the radio, tape and cd)
After opening up the unit and inspecting, I found one of the pins on the printed circuit board for the power had broken away from the solder. (it is a tiny board where the AC connector is soldered to) Seems in my unit there is nothing securing the molded AC connecter to the plastic case except the the printed circuit board it is soldered to-It is a poor design; perhaps your is the same? I suspect over time pushing the AC cord into the back of the player may have broke the connection? Anyway, I soldered the connection and I have never had any additional problems as the unit has worked fine since.
Don't know if this helps, but my suggestion would be to open the unit and inspect the pin connections on the AC printed circuit board to see if any have a loose/broken connection. ( Mine was not noticible with the naked eye as I had to use a magnifying lens and a bright light. Hope this might help.

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