Question about Sanyo DP42848 LCD TV
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
Posted on Mar 18, 2011
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Aug 30, 2011 | Sanyo DP42848 LCD TV
Feb 06, 2011 | Denon AVR 3808Ci Receiver
Jan 12, 2011 | Sanyo DP42848 LCD TV
Dec 15, 2010 | Sanyo DP42849 42 in. HDTV
Dec 02, 2010 | Televison & Video
Sep 26, 2009 | Audio Players & Recorders
Apr 11, 2009 | Yamaha HTR-6130 Receiver
Feb 12, 2009 | Sony VRD-MC5 DVD Recorder
Nov 22, 2007 | Cyberhome DVR 1600 DVD Recorder
1,083 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: