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I need circuit for G12-060 power inverter - GPS

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What would cause a black screen on vizio LCD Tv? I have sound but no picture


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 14, 2017 | Vizio Televison & Video

2 Answers

LG tv 55GA6400 has sound but picture keeps going black after a minute or so.


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 13, 2017 | LG Televison & Video

2 Answers

Vizio tv 37" picture started to get darker


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 11, 2017 | Vizio Televison & Video

1 Answer

Is the Backlight inverter and the power supply unit in the same board for this tv?


To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
http://electro-medical.blogspot.com/

May 18, 2016 | Televison & Video

2 Answers

I have a samsung tv un46eh500 with sound and a dark image...is it backlights?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

May 10, 2016 | Samsung Televison & Video

1 Answer

Tv flickers off and on


Hi,
You have to check the back light inverter of your lcd tv. In all lcd tvs there are back lights to illuminate the pixels. There are two types of back lighting in use . CCFL ( cold cathode fluorescent lamp) and LED (light emitting diode). In you your tv it will be CCFL. If it is CCFL then it need an inverter (voltage step up circuit) for getting its working voltages. Normally it will produce above 1000V in low current. In the inverter circuit there will be inverter transformers. If the winding of the transformer get shorted then the inverter will drain a high current from the power supply. If so then the current sensing circuit senses the same and it will shut down the power supply. That's why it do the cycle ON an OFF repeatedly.
Just check the inverter board. Normally there will be three circuit boards in LCD TV. Mother board, SMPS (switch mode power supply) and inverter board. In some tvs the SMPS and inverter bord will com-pained as one board. you have to check the inverter transformers. there will be 4 or 6 inverter transformers. if available replace the inverter board as a whole.
Also check the electrolytic capacitors in the power supply. if any of the capacitor seems like one that in the picture, then replace the same and then only go for the inverter board



ajin_g_8.jpg ok

May 29, 2011 | LG 42LC2D 42 in. LCD HDTV

1 Answer

There is 3 phase power to the inverter. Motor is ok. There is no dispaly and power led is off on front panel. no short circuit in motor or inverter ( combivert f5)


If there is no LED or display the inverter is not being powered up. Most likely a defective power stage which would need to be repaired.

Nov 15, 2010 | Inverter KEB COMBIVERT F5

1 Answer

Screen went black/blank can hear sound no picture, cannot change source or access menu LN-S4692D


Your inverter circuits and/or power board need servicing.....

Either three fault scenarios are happening:

1. the inverter circuits are not producing AC ripple too the CCFL lamps that illuminate the LCD glass panel.

2. the power supply board is not feeding 24vdc - 12vdc sustain voltage too the inverter circuits. Meaning, no dc high voltage output from the power board.

3. The timing control circuit (LCD Board) has shorted switching devices or on-board memory has failed....which causes data/dc loss at the input which results in the inverters canceling load power (lamps). The sync data between inverter and LCD Board are absent. This will result in a 'NO LIGHT' condition on the LCD display.

Number 3 is a rare case, its usually #1 the inverters need servicing.....

Nov 10, 2009 | Samsung LN-S4692D 46 in. LCD HDTV

1 Answer

Want To Install a 1250 W Power Inverter on a Class A Motorhome


You are definitely on the right track. When you choose your power inverter consider the following: buy the inverter for around 40% more of your anticiapted load. You will need a double pole transfer switch to isolate the inverter from the generator(and visa versa). A simple double throw double pole switch with fuse or breaker protection should do it. You wouldn't necessarily have to isolate the curbside circuit as the double pole double throw switch would simply be switching the power from the existing generator to your new inverter for only the roadside circuit; i.e. you don't need to worry about the curbside power source as it will always be connected to the other branch circuit. Even if your generator or other source came on the system would be protected no matter what the the roadside configuration was set to as only one source of the 2 roadside power sources would be connected at any give time to the roadside circuit. The six dots represent the connecions for the double pole, double throw switch; shown supplying the new inverter to the roadside circuit while the source from the existing generator or inverter is disconnected via this switch from the roadside circuit:

existing * *------* new power inverter; switched to source
* *------*
^
Middle 2 dots represent your roadside circuit and represent the "throw arm" of the switch. Safe and simple! If you don't have a voltage meter for your batteries you can purchase one for a few bucks. Just run it across the terminals so you will know battery condition as it is being drained (you may already have this indicator) You can find a transfer switch at an electrical supply place, maybe even Lowes. Make sure you get the switch that will be in a protected enclosre. The enclosurre can be purchased seperately if you can't find the switch/enclosure package together.

Good luck....gary

Mar 12, 2009 | Inverter Aims Pure Sine Wave Power...

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