Question about Zenith VRB420 VHS VCR

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NO POWER ,MAKING A TICKING SOUND IN POWER SUPPLY

GO VIDEO VCR MODEL # GV3070X

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  • marvin_allen Jan 11, 2009

    THANK YOU, DO YOU KNOW WHICH COMPONENT IN THE (PS) ARE DEFECTIVE , I'LL MAKE THE REPAIRS IN VCR MODEL GV3070X.

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This is a sure sign the power supply needs replaced and is damaged!
Replace power supply and all should be fine again!
PLEASE rate my response to your question!
Thank
You!

Posted on Jan 08, 2009

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It sounds like either a mechanical failure shutting the machine down or the switch mode power supply just gave out. Repairing VCR's is not worth the charges these days BUT head to your local Goodwill store. There you'll find a stack of good VCR's for less than $10 each.

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We have a RCA VCR Model VR622HF Manf. 9-18-98 that suddenly won't turn on manually OR with remote. I am an experienced Electronic Tech with 43 years @ ATT. I measured the resistance at the AC Plug and read...


Hi,
If front display lit up when vcr plugged in that means power supply is working and issue is in system control section, and if front display remains dark while vcr plugged in wall socket then power supply is defective.
As you know its an old model vcr so I do not think spare parts would be available any more, I found good option for you to fix this vcr.
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3 Answers

Will not come on


RCA DRC8320N DVD Recorder/VCR

Symptoms:

Seems to have no power, no lights on front lit, if listened to closely one may hear a "click click click" sound.

Solution: Replace C232 on power supply board.

Additional technical info:

In this design, the switching power supply feedback is from the 5 volt standby rail only, which is odd. The problem is caused when C232, the first filter capacitor in this rail and the sampling point for the feedback circuit, opens. The clicking sound is transformer rattle as the power supply restarts repeatedly.

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RCA VCR makes high pitched whining noise when it's on...


The power supply is starting to fail. There are a number of capacitors in the power supply that need to be replaced. A local repair shop should be able to fix this easily. Figure on $10 max for parts.

Dan

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Not many of us could help you, a quicker solution would be to Google your above question. " CCT Diagram+HR-J20ES/SA"

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Fuses blow afer power surge


These are switch mode power supplies and very difficult to repair. If you don't find all the blown components, they just blow up again when you try it. If that model has a separate module for the supply, you can try and order a replacement, but they usually are too expensive.
What model is it? Maybe I have a junker I can take the supply from for you?

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1 Answer

No picture


Question, do you have sound? I would venture to think that the power hit would have taken out the power supply thus killing the whole unit. So lets deal with this as though the power hit may have killed part of the unit. The first thing I would do is to determine if the RF stages are bad. I would inject a know good signal into the Antenna in of the VCR this can be done by using a modulator and a analog video camera to create the video signal, better yet use a VA62A universal video analyzer (I know I say use this a lot, but it cuts down on so much of the guess work). After you inject the signal use your schematic to trace down the point where the video signal stops. If I where to take a guess at this I would say that the Video Processor is bad. This has happend to me on two occations troubleshoot a loss of video only to find out that the entire Video processing stage was in one chip and a power spike killed the unit and this processor. So you might have a bad video processor. Make sure you are using a schematic when working on this problem, because I thin that is what the issue is a bad video processor IC. I hope it is something like the Tuner module or the video detector, but I am getting the video processor feeling from this problem.

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1 Answer

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If you have tryed this with your VCR then Im guessing that there is a power supply issue. In most cases, a VCR would not be worth the repair or the diagnostic fee to inform you on how much the vcr will cost to repair. If you really want to playback VCR format buy a new one with a built in DVD recorder, buy some inexpensive DVD blanks, and put those Video tape onto the DVD format and they will never ever fade.

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1 Answer

No power to GV3080X


Sorry but if a fuse blows theres a reason 99.999999999% of the time. as a fuse very rarly goes bad all by its self. This unit is a difficult one to trouble shoot unless you have the schematic diagram. It sounds like your missing the main b+ voltage and could be the regulator ic or a capacitor in the supply. If your not a tech you will be shooting in the dark replacing parts as you need a good muti-meter to assist you in these types of repair. Good Luck

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