How do I replace a damaged power supply transformer on a DN-600F ?
Hello, I plugged my 120VAC made-for-USA Denon DN-600F CD player into a 220VAC power outlet, and the CD player won't work now. I looked inside to see if there was a fuse I could replace...but there was no fuse; so it must be that the high voltage damaged the power supply transformer inside. I would like to try to replace the transformer myself...either by getting it rewound, or by finding another transformer with similar specifications. Could anyone help me, and tell me what the specifications to that transformer are ? There's nothing much written on the transformer or the circuit board that I can understand......it just says .66 on the transformer, and maybe another number with no indication to what the number describes. I would be grateful for any advice - anything I need to know to undertake this repair. Thank you.
Re: How do I replace a damaged power supply transformer...
i'll suggest you one quick solution but it maybe dangerous!(Do it the greek way :P)
try to remove the transformer from the machine.
Take one Ohm meter and measure the resistance of the 120 vac coil. IF THERE IS NOT ANY (i mean that the ohm meter shows nothing diferent than not using it)
get a paper blade and start removing the paper cover that it has rounded from the place where the 120 vac wires goes.
you will see there that there is a mini thermal fuse.short circuit the thermal fuse and try to measure again the resistance of the 120 vac coil.
if you see something between 40 and 80 ohms you are ok.
Now that you haven't got any thermal fuse on your transformer just increase your security putting on a 300 mA fuse at the 120vac coil.
I have done it with many hard to find transformers and it worked for me.Just be sure that when you plug it on, you will not touch it because i don't know if you are gonna do it right.ok? (say ok!)
That was the second solution to your problem.
The first and the safest is to go to your local dealer and order a new transformer.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If there is no indication in the user manual or any spec listing it may not. Most of the time the power supplies used are for the full range of voltages available. It will not damage it to try. Get a power adapter instead of chopping the wire and putting on a new plug. If this does not work, buy a step up transformer 120VAC to 220VAC. Make sure the transformer is rated to at least 30% or greater for the wattage specs. If not the transformer can run too hot.
Try a Power Supply Unit (PSU) Reset: Unplug the electrical cable from the wall and the PSU (Back of Computer)
Move the red voltage selector to the opposite position it is in and then slide it back. If you live in the USA 120Vac to 220Vac back to 120Vac
After you have done this you can plug the power cable back into the PSU. Connect the power cable to the wall power. If the PSU is still serviceable it will no longer be blinking.
Check with Hi Fi Engine, owner-manuals.com and then stereomanuals.com to see if the manual is there. Then deal with the problem. Some units are old enough to not be compatible with CD-R. It will say in the manual.
You have to use a step down transformer with this set and not a converter. The AC household voltage in Inda is 220VAC. Your set is designed to work on 120VAC. Therefore a 220VAC==>120VAC step-down transformer is needed to feed it. The onkyo has transformer inside, and it should get 120VAC; atleast 5AMPS current capacity. AN inverter cannot synchronised with this set. You can either buy it from Inidan electronics spare part market, of can be winded by expereiced transformer winders. Never give any inverter to this set, as some Onkyo models will have Torroid transformer inside, and it will take a tremendous amount of current at start-up, and make either your Onkyo of your converter to get damaged. OK.
Dave, Holding the motor spindle / laser assembly in a position where the white ribben plug in receptacle is facing in an upward position, look down to the lower left hand corner of the print board just under the plug in. You will see a small blob of solder bridging two contact points. Remove this solder bridge. I have found two new Denon assemblys with this problem.........*****
sorry to say but you may have destroyed the units. USA uses 110volt. Uk is 240volts. There may be circuit protectors, pico fuses, internal fuses, and transformer fuses that have failed. replacing them first is the first approach to getting them going again. An adapter plug is not what you need. You require a step-down transformer to reduce the voltage supplies to 110volts. Check on the units also. There may be a voltage selector switch that you can select the right voltage for the UK. Be careful with how you go. Mains voltage kills. If you are not sure then please go to a tech and have them check the decks over for you. Good luck