Question about Rio Go Video GV3080X VHS VCR

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No power to GV3080X

I have a GV3080X dual VHS that gets no power. I have replaced the power supply fuse and when I plug the unit in, all I can hear is a buzzing sound coming from the power supply.

Posted by Ron Sandlin on

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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

Posted on Jun 14, 2006

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Was working fine last night ,went to turn it on and you can hear a buzzing by where you plug in your jacks a bee,or high pitch sound.tv has no picture or sound.only sound you hear is this buzzing



Sounds like your power supply is causing the problem. Unplug the TV wait 10 minutes, look in the back for a red button (circuit breaker) push it in. If this does not work you have a low voltage power supply fault.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/reuben_09f18ea112b9b936

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Is there a fuse in the pima mx860 that could keep it from powering on ?


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The power supply in the machine (its a sealed unit) or the SCNT Board. Its unlikely to be the operation panels on/off switch.
When you try to turn the machine on, listen to it. Do you hear a buzz or in fact any sound at all? If you do then it will be the board. If you don't then its more than likely the power supply. Also look at the screen, do you have any black squares on it? If so then again its the board.

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1 Answer

Hearing a buzzing sound at start up.


I think that your PSU is dead and your motherboard must be dead too (not sure)

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1 Answer

Loud buzzing sharp


Could be in the power supply, (hear it with sound turned off) or another area like in the optical unit- or even one of the fans.

Need to try by ear to localize where it is coming from---with sound off if a loud buzz look first to power supply and then optical area.

SD TECH

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1 Answer

Unit dead after a power outage replaced fuse blew fuse again even with power out of unit can i just get a new power supply?


Below is a link to a list of replacement parts for this unit.

http://www.encompassparts.com/models/?RCAVR605HF

The replacement power supply is $61.00 so probably not viable. 233160 CIRCUIT, POWER SUPPL [E3]

Depending on your technical ability if you could find which components have been damaged that are causing the fuse to blow it could be a very cheap fix.

If you require and further assistance then maybe you could post some pictures of the power supply PCB as I may be able to identify which components are damaged.


Please leave feedback

Cheers

Andy

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1 Answer

My Sony SLV-F900 VHS will not power on after power cut


If the fuse(s) check out OK, and the unit is showing no other signs of life I'd say you have a faulty switch mode power supply circuit - the best place to start is by checking all the electrolytic capacitors in it (look for any that have ruptured or are bulging on top and replace them with new caps of the same value and voltage if possible), then progress from there. Assuming the failure hasn't taken any other components out, re-capping may fix the problem but if the PSU has an IC regulator, it might be worth checking that as well. If it is shorted you may have to order a new IC which could be expensive (assuming the part is still available).

The faint sizzle would be the power transformer arcing as current passes through it. I believe there are no less than 10 caps in that circuit you need to look at. All electrolytic and all can be potential troublemakers.

You should only need to look at the caps in the power supply (replace any suspect/ruptured/leaky ones if necessary) as a starting point. If it gets too hard after that, consult a service center for a third opinion.

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1 Answer

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Right. It sounds like either a bad connection on the control panel, or maybe a low or intermittent supply at the outlet.

I would try plugging a lamp into the outlet and see if it works well. That gives you a good low-current test. For a good high-current test, try a toaster or hair dryer.

You might also check the fuse and holder. It's pretty common for these fuses to get loose on the end caps and sometimes the holders may be loose.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

It is turns out to be the controller, we repair these for customers nationwide with our guaranteed $39.95 service.

Please feel free to contact me directly if you need more help. And please mention your model number when you write.

We're happy to help you and we'd appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

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1 Answer

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Hi: That could be the power cord itself shorting out right near where it plugs into the set.

DO NOT hesitate removing the plug from the AC wall plug, since fires have started this way!!

If its the cord you can replace it or if its inside the set it will need repair.

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