Question about JVC XL-R5000BK CD Player

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Bad connection Hi, I have this recorder and it was plugged up to a power supply that was over the present voltage for it. Now it will not come on or do anything. Can you tell me what maybe wrong with it? Email me with a response to dewaynewinters@yahoo.com. Thanks.

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Have you checked the power supply for a fuse to it, should have a in-line fuse in it good luck if it didn't get burnt out.

Posted on Jul 10, 2009

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Posted on Jan 02, 2017

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Sony KDL52XBR4 will not power up


Some power supplies have a short circuit protection. it turn off the power supply if it detect an overload/short condition.

Mar 08, 2013 | Computers & Internet

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HI, I have a Sylvania tv LCD LC155sc8 no turn on, somebody can help me. I apreciate a lot your help about it, fuse ok, diode bridge ok


You seem to know a bit about troubleshooting.
do you know what the inverters are?
they are ballasts for the flourescent backlight.
they are a circuit board that is on either the far left or right of the back of the panel, sometimes they are on both side (depends on the panel used)

from the power supply board there will be a multi pin connector going to the inverter board.
Look at the power supply end of the connector and find the pins labeled 24V.
If that voltage is present when you push the "on" button, your power supply is working and your main board is working. You have bad panel. Too expensive to repair.

If that voltage is NOT present. Look at the power supply board for capacitors that have bulged tops.
Replace them with same value...
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1 Answer

One speaker hums very loud with nothing plugged into it i own the mr-8


If this monitor is humming without nothing connected to it, maybe the electrolytic capacitors from its power supply are bad - they are responsible for filtering the fluctuation at the output of the internal voltage rectifiers that transform the AC input voltage into a DC voltage to feed its internal amplifier.

When they fail, the supply voltage for its internal amplifier that should be flat, continuous, now presents a pulsating profile, according to the mains frequency (generally 60 or 50 Hz, depending on the country you're in). So, the output of the amplifier will be varying at the same rate, producing the humming.

Another possibility is that one internal cable connection that should be shielded is now disconnected or loose and is picking the hum from the internal power supply.

Anyway, maybe you should take it to a service center and have it checked.

Hope this info may help you!

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How to tell if the power supply is bad.


You can check if the power supply is bad using a multitester.

Connect the power cord at the back of the power supply and plug it in an AC outlet. Measure the voltage out from the connector. Using the multitester (set it to DC range), insert the black probe to one of the black wire in the peripheral connector of the power supply while the red probe in the yellow wire. Reading should be +12VD. Now, transfer the red probe to the red wire, reading is +5VDC. Reading below this measurement is a clear indication of a bad power supply.
Put some load in it, like connecting a hard drive or a cd rom drive.Try measuring the output voltage again. If voltage out dropped then it is Bad.

Hope this will help you understand.
Thank you for using Fixya.

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Camera works fine with power supply cord connected. It will also charge the battery if connected to camera and power supply connected to ac outlet. Checked battery and it has 8.32 Volts stored in it after...


Your charger is probibly the problem i had a friend of mine that had the same problem but different camera i told him to get a new charger he did and it worked so yoyu do the same goodluck:) please rate this solution...

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My laptops screen does not come on even though the unit powers up,i have tried another screen,and tried using external monitor,neither worked,the lights by power button also don;t light.


Did you check the power supply? They go bad and if you get no power, nothing else will work. You can check the power supply by plugging the unit into an outlet and then using a volt-ohm meter measuring the voltage at the cylinder which normally plugs into the computer. If there is no voltage (DC) present, then the supply is bad. You can get a replacement online or at the place you purchased the unit.

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I have an emachines t3958 w/ intel d845epi/d845gvsr, it will not turn on. i have replaced the power supply, and i believe everything is plugged in correctly. help!


Hi there,
Do any fans or lights come on?

Here's things I'd check:
-Replace Power supply (You already did this)
-Try a different AC outlet, remove any surge protector
-Remove the Power Button Cable from the MB and short those pins
with a screw driver just for a second.. (to eliminate a bad power button)
-Verify that the Power button is connected to the correct place.
-Verify the voltage selector on the Power supply is set to 115V (if that's what you have)
-Verify the Power supply's additional switch is set to on (if it has one on the back)
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1 Answer

ILO DVDR05 makes high pitched squeal during recording


Usually a problem like this has to do with d.c. power sypply problems. Because "record" uses a different supply voltage and maybe "subcirckit" [not the same dc voltage that you use for playback, etc] If you know HOW to look inside and if you know how to take voltage\current readings...check ALL capitors,the diodes(misspelled?)Replace any that are "swolened", they are bad Other then that, take it to tech who if he is a crock he will overcharge, and if he is honest will repair for a fair price..... " Rotosa Ruck " [lots of luck]

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USB not being recognised by pc


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