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Power supply regulation number - RCA F19207BC TV

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My TV has sound but no picture. Also, I periodically have to unplug and plug back in the power cord to turn the TV on. Model number: 42HF7945D/27 Serial number: YA1A0749019584 Can it be fixed?


Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

May 08, 2015 | Philips Phillips - 40" Class - Led - 1080p...

1 Answer

How come the power button to my Sanyo TV model number DP26640 would just quit working


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.

Oct 09, 2014 | Sanyo Televison & Video

1 Answer

My 42 in lg tv model number 42ld450-ua went off


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.

Sep 25, 2014 | Televison & Video

1 Answer

What causes Power button on but no sound or picture


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and precious time.

Aug 16, 2014 | Televison & Video

1 Answer

My Sylvania tv model number LD320SS1 screen is flashing red, blue, white screen when you turn it on


Fault with the main power supply regulator board.
Check and replace damaged component/s at its main power regulator [SMPS] section circuit.Contact any service technician.If you wish to get some details; check the site linked here.Surf the site with patience.Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

Aug 05, 2014 | Televison & Video

1 Answer

My Sylvania tv model number LD320SS1screen is flashing red, blue, white screen


Fault with the main power supply regulator board.
Check and replace damaged component/s at its main power regulator [SMPS] section circuit.Contact any service technician.If you wish to get some details; check the site linked here.Surf the site with patience.Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

Aug 05, 2014 | Televison & Video

1 Answer

Samsung trouble shooting


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

Jul 28, 2014 | Samsung Televison & Video

1 Answer

Lost the regulator or switching transistor from the power supply.


It is likely that the transistor has a propretary part number so you will have to refer your inquiry directly to Philips.

Jan 25, 2014 | Philips DVDR3370H DVD Recorder/HDD...

1 Answer

My Behringer XENYX 2442FX Mixer does not power up, the only light that comes on is the phantom power light. I opened it up and noticed that the switching power supply has multiple voltage outputs. We...


You should find +/-15 volts and +5 volts as well as the phantom power... but that light can come on at much lower than desired voltage.

Note that the regulators are current limited so a short on the mixer board can kill one of the voltages.... but you are not getting any input from teh switching portion of the regulator so the switching part of the supply is apparently dead. To replace the supply you would have to call Behringer at 1-425-672-0816 to get the part number and an incident number and then call FullCompass which is their part distributor now.

When working on a switching power supply, use an isolation transformer for safety and use a 60 watt lamp in series with the power cord to limit current during testing.

The circuitry will be SIMILAR to the power supply found on page 9 of schematic you can download at:

http://elektrotanya.com/behringer_ub1204fx_pro.pdf/download.html

Dec 15, 2010 | Behringer XENYX 2442FX Mixer

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