Question about Whistler PI-1200W 1200-Watt Power Inverter Car Audio Amplifier

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Whister 1200 Inverter

When I turn my tv on, invertor beeps and goes off. Can you help?

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  • John Nolan May 11, 2010

    how do you have the inverter connected to your vehicle? How many watts is your TV?



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If the inverter is wired to a lighter socket then you do not have enough power as lighter sockets are generally limited to 100-150 watts. If you are using the supplied battery clamps, then is the vehicle running to supply enough power to run your TV?

Posted on Feb 22, 2010


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Ac wont turn

Do you mean the invertor does not run?

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Polaroid LCD tv - model TLX-04244b . Flashes the blue polaroid screen then goes black ,I hear a buzz coming from the inverter board. I have replaced both inverter boards and the same problems exisis .

I just changed out the invertor boards and mine was fixed. I had the same problem. Im not a TV repair man but replace the board thats buzzing and it will work again.

Jun 23, 2012 | Polaroid 4226TLMB 42 in. LCD TV

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Manual for black and decker 1200 watt invertor

some idea for inverter, collect inverter circuit Books from market.

May 28, 2012 | Black & Decker Vector Cable Kit for 1200...

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Vo42l no picture. please help!

I had the same problem. No picture but sound. When I turned on the tv, and shined a flashlight around the screen from about 3 inches away, I could it was displaying something.

At first I replaced the main board which has 0171-2272-2604 stamped on it. You can google Vizio VO42L service manual and get a pdf which will show how to remove the back. I got the board from TSM www.tristatemodule.com3642-0482-0150 3642-0482-0150 Vizio TV Module, main unit, 0171-2272-2604, 3642-0482-0395, VO42LFHDTV10A 1 $88.95 $88.95

Order Notes: None
$88.95 Shipping: USPS Priority $20.00 Tax:
$0.00 Total:
$108.95 However, after I replaced this board I still had the same problem. So next I replaced the Invertor boards. There is a Master and a Slave board to the right and left sides of the main board. I ordered these from Coppell tv.
on Ebay.
6632L-0470A & 6632L-0471A INVERTER REPLACEMENT SET - NEW, OEM, WARRANTY ( 110882329800 ) 110882329800_1.jpg Paid on Jun-08-12
$49.99 -
USPS First Class Package Estimated delivery: June 13, 2012
These are compatible replacement inverter boards and work well. All I had to do was bend a tab on the aluminum cover that goes over the boards. After installing these inverter boards the Vizio display works. I started with main board replacement because from what I read online, the problem was either the mainboard (which had the most posts) or the inverter boards. So I picked one.
Install tips:
Download the PDF Service Manual VO42L FHDTV10A_LPL,AUO Service Manual.pdf for some help with the back cover.
When you take all the screws out, set them aside in the same pattern they were on the board for ease of putting the back in.
I was not able to remove the connector on the Ribbon cable between the master and slave invertor, so I left it attached and carefully undid all the tape and removed the boards attached. I plan to send the old boards to Coppell TV (really nice to work with) for their re-use.
I hope this helps.

Feb 27, 2012 | Vizio VO42L 42 in. LCD TV

3 Answers

I'm dumb. Can I hook an inverater to my generator and produce more enegry than my generator produces???

Please understand that the generator produces power from fuel with an engine wheras the invertor is one which genrerates power from a stored battery using the principle of frequency switching a DC source to induct and produce AC.
Now you can have an uninterupted power supply setting with the invertor backed up by the generator so that when the battery voltage goes down you can start and charge the invertor and also supply the extra energy .
the ratings of both must also be considered.

Sep 25, 2010 | Electronics - Others

1 Answer

My TV turns on but the screen is sound no picture...

its the slave invertor or if it has one its the invertor

Apr 20, 2010 | Proscan 32LA30Q Television

1 Answer

Fan does not work.

Two the fan only workk when the unit get hot or you created short the inversters are very sinsative and if you make mistake you are dead...see try it for ferw min and see...but first try to reset the unit and that by disconnecting the negative and positive from the back and turn the unit on to get all charges in the unit out then reconnect the cables do not forget to ground the unit to avoid sparks.

Sep 09, 2009 | Vector VEC053D 1200-Watt Power Inverter

1 Answer

Power invertor weill beep a few times then shut

insufficient ground...check your connections and try NOT continue to use the unit if the problem persists.
Good Luck

Jun 15, 2009 | Cobra 2500w Power Inverter

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