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Question about Sony CFD-E75 Cassette/CD Boombox

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No power to unit

When I attempt to play cd or radio, it starts then fades away and the lcd display goes blank. If I hold the end of the ac power cord at an angle where it enters the unit, sometimes it will play. I know that the cord is good (I used one from another Sony unit), so I'm guessing it must be the ac inlet inside of the unit. Would this be correct and if so, where could I find a replacement. I've opened the unit and looked at the inlet plug, but did not observe anything. Thanks!

Posted by Dennis Wells on

  • Anonymous Dec 23, 2008

    Have the same problem, but I can't figure out how to open the case!



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Remove the power plug and reopen the unit. Usually the socket will be soldered directly to a Printed Circuit Board. Look in the underside (where the solder joints are and you'll see the joints associated with the power socket. One of these is either a bad connection or the solder pad has lifted and broken the track on the PC board. If it's the solder pads give them a workout with a soldering iron if it still plays up scrape the protective lacquer of the PCboard Tracks and resolder them to the socket's solder joints. This should solve your problem. The best way to spot a bad connection is to reinsert your plug (making sure the other end isn't plugged into the wall socket) and lever the plug up, down, left and right. If there's anything faulty you'll see it. The solder joints will move very slightly and if the track is fractured you should spot that too. One other tip is that there is a switch built into the socket which will disable the battery power when you plug the unit into power. I have seen a few of these switches go bad but the chance of that is extremely small. I'd put my money on the socket's solder joints. BMW

Posted on Jul 14, 2006



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Fuse blown in primary of xformer, you cannot replace it but get creative, measure across the 4 pins on xformer, fuse is across last 2.

Posted on Aug 10, 2010


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SOURCE: My Sony CFD SO1 keeps skipping/display light keeps flashing

That is an electronic problem. Probably a just-about-to-break cable in the motor of the CD drive, that sometimes causes a short and turns off the unit, or sometimes makes it to comport erratically and produce the buzzy sound. If you have electronics knowledge, then you may open and check the wiring harnesses. If don't, take it to your local electronics repair.

Posted on Nov 20, 2009

Testimonial: "Thanks! In terms of price though? Would it cost as much to get it repaired as the CD Player itself? Or is it a reasonable price?"


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SOURCE: I need a replacement electric cord for my old Sony

Tv repairs shops carry a selection of power supply cords, also check out Radio Shack Stores.

Posted on Feb 03, 2011


Power Payless

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SOURCE: I lost my AC Power

Try this , they sell power adapters for sony CD radio cassette

Posted on Jun 28, 2012

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Turn radio on, 1 will appear in the display. Via the 6 preset buttons enter the 6 digit security code. As each number is entered the number will be displayed in the lcd. If the correct number was entered the unit will operate after a few seconds. You get 3 goes then you have to wait an hour to try again.
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Do you get any constant results with any CD, say one that always works vs one that never works? Compare them visually for problems on the one that doesn't. I use a clean soft cloth with glass cleaner to clean my media.

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Care of CDs
When a CD becomes dirty, wipe it from the center out with a
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If your unit fails to perform properly, check the following guide
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Disconnect the AC power cord from the AC power outlet
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The unit blacks out when the unit is turned off.
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Erroneous display.
•Reset the unit.
Poor radio reception.
•Check antenna connection. Adjust the antenna to find the
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•Move unit and antenna away from other electric appliances
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The tape does not run.
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•Check for dirty heads. Clean them if needed.
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Cannot record.
•Is the erasure prevention tab of the tape broken off? If so,
cover the detection slot with adhesive tape.
The CD player works poorly.
•Is the disc correctly loaded?
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•Is the lens affected by condensation? If so, wait
approximately one hour and try again.
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If an unusual condition occurs in the display window or the
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1 Press POWER to turn off the power.
If the power cannot be turned off, disconnect the AC power
cord, then plug it in again.
2 Hold down s and press POWER.
Everything stored in memory after purchase is cleared.
Moisture may form on the CD pickup lens when:
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