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Buzzing with all lights on and all appliances connected not working even with normal power supply

Disconnected power out from inverteected and connected it to mains. all affected appliances working. Would like to fix inverter.any suggestions?

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Benimur
  • 6966 Answers

SOURCE: AOC LM700 17" LCD Screen switches to black and then comes back to norm

Hi,

According to LCDParts, an inverter for an AOC LM700 would cost $69.99. Specs (with picture) are available here.

Perhaps you can do a Google for lesser priced versions.

Good luck and kind regards.

Posted on Feb 08, 2008

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Benimur
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SOURCE: UPS problem

Hi,

Based on your post/description, two (2) possibilities:
1. electronic fault - main power/AC mains sensor which could be really just a relay; or
2. corroded fuse terminals or fuse holder.

The first is a bit of a challenge since different brands/models have different sensing circuitry design. Some can be as earlier stated, a simple AC relay while others could be a TRIAC switch with a DIAC trigger. Still, some could be an elaborate AD converter and a myriad of logic circuitry. Often, a service manual or at least a schematic diagram would be needed, however these are not that readily available and most often the tech or DIYer must resort to winging it. This of course would require familiarity with electronic circuitry and components, use of a DVM and a soldering iron. Extreme caution must be exercised since even with 12VDC supply most of the electronics are at least at 60VAC+ level.

The 2nd possibility would be of course be the easiest to determine and repair. Replace/clean.

Should the downtime & repair cost makes the project no longer economically reasonable, perhaps your best bet would be to simply replace the UPS since their prices are relatively low.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Apr 16, 2008

  • 10 Answers

SOURCE: My GZ-MG20 wont turn on.

You need a new battery, it has lost its ability to charge.

Posted on May 12, 2008

  • 1 Answer

SOURCE: TDP-S8 Power supply led not lighting up. Unit not working

There seems to be problem in your power supply. Look for any swollen capacitor --- generally 3300uf, 10V. Be careful about the polarity of the capacitor before you take it out. Check the capacitor to make sure how it's mounted ( for polarity purpose). Negative side of capacitor will be toward the outside of pc board. Substituting 2200uf, 16V capacitor for 3300uf, 10V will work ok.

Posted on May 17, 2009

cmcduncand
  • 714 Answers

SOURCE: red fault light comes on after about 10 mins and

Had a similar problem with the same inverter BUT to include a failing cooling fan.

NOTE:
Take it back and get your money back as soon as possible.

Replaced it with a pure sine inverter 1500 watt that is kicking **** 24 seven days a week on my solar / wind power system.

RECOMENDATIONS:

UPGRADE.

Hope this tip helps.

R/
David

Posted on Jan 30, 2010

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42 inch Philips buzzing in back and no power on


The TV still uses power when it is off. You need a small amount of power for the remote to work. The power supply is on even when the TV is off. The buzzing is not normal and could indicate a future failure in the power supply.

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My printer will not turn on


First, try pressing and quickly releasing the Power button to start a Power On/Off cycle. Do not hold down the button. If this resolves the problem your done; if not continue on.

Inspect the power cord for visible damage; if damaged will need to contact HP to replace.

Disconnect the power supply (power module and cord) from the power source (wall socket) and the printer.

Test the power source, wall socket with or without your power bar or surge protector in place, with a small appliance you know works to confirm you have power. You may want to test the wall socket first and then test the power bar, etc. to make sure each component is not the problem.

If the appliance works then need to investigate the power supply. If the small appliance does not work you may need to check your electrical panel for a tripped breaker and possibly consult an electrician to check your electrical wiring.

To test the power supply plug in to the working power source; if the green light on the power supply does not light up you will need to contact HP to replace the power supply.

If the green light on the power supply lights up; reconnect to the printer.

Press and quickly release the Power button to turn the printer on. if the printer does not turn on you will need to check the USB cable.

Disconnect the USB cable from the printer.

Press the Power button to turn on the printer; if the printer turns on you will need to replace the USB cable.

If printer does not turn on, check the battery if your printer has one. A red light means the battery requires recharging; if it is still red after recharging, replace the battery.

If none of these steps resolve your issue before replacing the power supply try plugging the power supply directly in to a different working wall socket with no power bar or surge suppressor.; Press the power button.

If still no power to the printer you need to replace the power supply.




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MB green light on but won't start


your power supply must be exact and both power connections to the motherboard must be connected. the green light will come on if voltage is supplied but will turn on a low voltage alarm which is a buzzing sound. or it just wont do anything

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Dell computer was working and i turned it on next day and it was dead no lights or noyhing


If your computer is under warranty, I'd suggest you contact either the Vendor where you bought it, or the Dell support site. Either should be able to acquire a new power supply and install it for you free of charge (if under warranty).

Some other thoughts though, before you do that. If there are no indicators that your power supply has died (smell burnt electronics, any weird buzzing sound prior to the computer not working, etceteras), then you might want to check the connections to the wall socket, the connection to the PSU itself, and even test the circuit breaker for your socket (some wall sockets have test / reset buttons that cut the power during surges).

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1 Answer

Emachine W2646--lights blinking on keyboard,pwr lamp on speaker on,power button on tower YELLOW,NO response! unplugged several hours,now dead,as if unplugged! This happened overnight while shut off...


If you have a Yellow light on power supply, chances are you have blown the power supply.
Even with a PC unplugged in a Bad Storm, I have seen many PC's and Laptops with Supplies shoot.
If you have a little computer savvy, the best thing to do is,
1. Disconnect power.
2. Open unit.
3. Disconnect all Devices from supply.
4. Disconnect 20 04 24 pin power supply connector to mother board.
5. If you have other connectors such as 4-pin 24 Volt acc. you can disconnect that as well.
6. Now plug in the supply. Note... Some supply's have a reset located in the rear of the supply, where it makes its input ( A/C connection. ) If so try the reset. Some supply's also light up or have a service light when sensing input power, some do not.
7. If all looks good and no sparks or flames, re-connect the mother board connection, (only)
Try to power on computer.
Note..... If you still have the Yellow light, Replace the supply.

In some cases, the power supply sees a fault and fold back to a protection mode.
The supply has several Capacitors in which hold a charge and when connected to the mother board retain that charge. Disconnecting the Mother Board 20- 24 pin connector will allow this charge to dissipate.
If all works after reconnecting supply, Your Good To Go.!!!
If not, you may need another Power supply.
Or may have done other damage.

Hope all works out for you.
Try it, it may work...
Readers, please rate your Technician
Thank you.
John Ray
john@johnrraycomputer.com

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I have to disconnect the power supply (I installed a switch) to shut off entirely the XM power supply as it will wipe-out your AM reception. Nothing you can do other than put in a switch. Even if the XM unit is OFF, you will still get the interference from the power supply.

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1 Answer

Power cord buzzes and MACPro does not recognize it


This is a fault in the power supply itself, I have just repaired one of these power supplies successfully.
The fault is caused by the failure of the filter capacitors on the 12V supply rail, and if the power supply is left connected to the mains supply (In our case 240V 50Hz) without the drive connected as a load, the unloaded output voltage will exceed the voltage rating of the capacitors, causing their failure. The failed capacitors had very obvious bulges at the top, and one was beginning to leak onto the PCB.

The filter capacitors on the 12V supply rail are rated at 16V, and the cpacitors on the 5V rail are rated at 10V, and when operated without a load, the 12V rail rises to approximately 19V, and the 5V rail rises to approximately 8V. All output filter capacitors are 1000uF, and 105deg C temperature rated.

I repaired my power supply by replacing all of the filter capacitors on the DC low voltage output rails with 1000uF 25V capacitors. Be careful to only fit the 105 deg C rated caps, as they operate at elevated temperatures in an enclosed environment with no ventillation to cool the power supply.
To ensure that the repair was reliable, I also replaced the filter capacitor on the 5V rail with the same 1000uF 25V, even though that capacitor showed no immediate signs of failure.

When reassembling the power supply, care must be taken to ensure that parts like the ferrite cored transformer are thermally bonded to the aluminium heatsink with a smear of heatsink compound.
When the power supply was first powered up following repair, everything was normal, the green power LED came on as usual, the supply outputs both came up OK, and the unit was not making any buzzing sounds, completely silent. The HDD now operated as normal when once again powered from this power supply.

This was the fix for my particular LaCie power supply model ACU057A-0512, and the supply once again works normally.


Tim,
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The drum doesn't rotate and a strange buzzing noise occurs


WHAT IS WRONG WITH YOUR DRYER?

small_8_20.jpg For a detailed Dryer illustration, click below.

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Gas Whirlpool Style Version 1
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redarrow.gif Gas Maytag Style
redarrow.gif Gas GE Style
redarrow.gif Electric Whirlpool Style Version 1
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Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.

Electric dryers aren't very complicated. Here are some common symptoms that you may experience with your dryer:

There's an error code on the digital display

It doesn't work at all
There's no heat
It won't tumble
Drying is too slow
It overheats
It seems to run forever
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It won't start
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It blows fuses or trips the circuit breaker
My clothes smell bad!
My clothes are marked or torn
DON'T FORGET TO RATE;

Aug 22, 2008 | Zanussi Dryers

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