SOURCE: 15 DAY OLD TV
Specifications Key Features Screen Size37 inch Contrast Ratio1,000:1 Flat Panel TypeLCD Television Display Resolution1366 x 768 pixels LCD Response Time8 ms Display Capabilities Built-in TunerNTSC · ATSC Broadcast Format Displayed480p (EDTV) · 720p (HDTV) · 480i (SDTV) Native Aspect Ratio16:9 Image Quality Brightness500 cd/m²
SOURCE: Sanyo DP42746 - Screen went black and no sound. Power light on.
The TV is on protect mode.
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.
If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.
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 , startingthe flashing light.
If you are in situation one, then theTV 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.
Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.
Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
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.
SOURCE: Sanyo CE26LD81B 26 in TV keeps going from a red
Press the Menu button on your remote control. It happened to me and worked.
Let me know how you get on.
Matt
SOURCE: screen went black on my 42" sanyo model dp42647 lcd
Hi there! The panel may be in protection mode. The Inverter board is the most logical area to start after checking power supply Voltages.(5,6,24 and 13Volts). There may be coils on the Inverter Board which have bad soldering or faulty. Other than this it may be main board which controls switch on or off. If all else fails, refer to a repairer. Beware of High Current!!! Best Wishes and Good Luck, Jus004
SOURCE: DP46849 has black screen with power light on.
It may be in safety shut down mode due to shorted circuits or power supply failure due to such thing as bad DC filter caps. You will need to do in-depth troubleshooting.
See www.shopjimmy.com if he has the picture of the boards.
Please read my guides also.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
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