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Need schematic for Power Supply Part# RUNTKA448WJQZ Used on Sharp LC-32SB220U TV

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: remote control tv codes for sharp lc-32sb24u tv

Hello,

I need the remote codes for sharp LC-32SB24U tv. Thank you!

Posted on Nov 23, 2008

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ginko
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SOURCE: LC-37AF3X Sharp Aquos KCD TV

If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Posted on May 05, 2009

  • 1779 Answers

SOURCE: power supply bad on Sharp Aquos LC - bad board - schematic to ID?

Buy the green light going on means Standby is ok. Next, would be to locate the plug coming from the main board to the power supply and find the post that says PO which means power on. With your meter on that post, press the power button as see if the reading goes High, if it does then the main board is able to turn on the power supply. Next, find the plug on the power supply that goes to the inverter( the long board on the side) remove it and see if you have 24 volts coming out of the power supply when you press the power. If you do, then the inverter board is bad, if you don't have 24 v, then the power supply is bad. There are NO diagrams available for these set other than a flow chart if you can find one. A regular svc tech does'nt need a manual for these anyway.

Let me know how you do Kathy ?

Posted on May 17, 2009

  • 308 Answers

SOURCE: If my Sharp Aquos 37in LC-40C37U tv needs to be

Blinking light is an error code. Count the blinks before they repeat. Check your manual in the troubleshooting section. If you can't find it, contact a Sharp service center or try and get a service manual. Reset info is also in the user manual but you can't do it if your set doesn't power up. Are you sure about the power board?

Posted on Apr 30, 2010

Testimonial: "Thank you. I will get another board."

  • 1 Answer

SOURCE: MY POWER KEEP GOING OF SHARP lc-20b2ua

I have the same problem. I fixed it for about 3 months by wrapping duct tape around the large pack midway in the cord (where the wall plug and TV line plug in). But, it started up again this week. I can't get the "box" open either, but that is where the problem is. Mine is mounted to the wall, so no one ever touches the cord. I'll let you know what we find when we get it opened.

Posted on Dec 29, 2010

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If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/Pull up older posts. Power supply schematics to many popular brand TVs are given. Sharp itself uses many STRs. You can compare the schematics and can get the details.

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Runtka448wjqz


Check all the voltages before and after the tv shuts down. If they don't change then the power supply board is ok. Look to the main board because that's what actually turns the tv off

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Sharp LC-32SB220U


If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.

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Schematic diagrams are in PDF, and cannot upload by this window. If you wish to get some details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.

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check the connector on the speaker might get loose, if ok re soldered cold soldered component parts in the amplifier section of the main board.

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1 Answer

TV is 4 years old. Not used very much. Watching TV yesterday, everything normal, great picture, etc.. TV goes off. Checked outlets,cable, etc.. Could not get TV power back on. Any suggestions ? No life,...


Hi,
Question heading shows it is Sharp LC-37G4U tv and if power indicator dose not lit if tv plugged in that means power supply board got defective and need to be replaced.
Required power supply board is available with ShopJimmy.com for $79
Click above link to view power supply board image and price info.
If you are handy with electronics stuff repair then can replace power supply board by yourself OR call local tv repair shop to do this job.
Hope these info will help you.
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Thanks

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Sharp LC-37D4U - Unit not power ON when power button is activated. - Main power module in located in the center has power (165V DC) and outputs 5V DC to the main processor module on the right via CN5702...


You have standby 5vdc but you need to find out if the processor board is sending out the PS_ON to the power supply to turn on the 12 and 24vdc power supply section.
Heres is the service manual and training manual for your TV.
http://elektrotanya.com/?q=showresult&megnev=Sharp%20&megnev2=LC-37G4U&kategoria=&kat2=all

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx

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2 Answers

Sound doesnt come out of tv when hookedup to cable box sharp tv


You must use the video and audio with their own separate cables. The sound is separate.
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Jerry G.

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