Question about Sanyo DP32746 32 in. LCD Television

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I replaced the backlight inverter board on my 32 in. LCD Sanyo model Dp32746, but I still have no video. The audio works fine and from time to time it looks like you see a faint image on the screen. I tried the reset button on the remote, but still no picture. Anything else I can check? Glen Raisor

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Did you chaeck first to find out if the power supply is putting out 24vdc for the inverter board, and also if the inverter is getting the backlight_on signal from the main board.
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

Failed TV and Monitors: 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 he can make you a set of caps

Posted on Oct 09, 2010

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Posted on Jan 02, 2017

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2 Answers

Sanyo DP32746 no picture, sound good


If there is still sound its the back light inverter, if no power at all its the ccfl

Mar 17, 2008 | Sanyo DP32746 32 in. LCD Television

1 Answer

I have no picture on my Sanyo Dp32746 LCD tv, the audio works fine. I replaced the backlight inverter board, but still no picture. Tried the reset button on the remote, can not see the main menu to try to...


U replaced the 1 or 2 LCD inverter long boards,still the same problems.Sorry,this is a rare problems,but it seem the Tuner board is the problems.Replaced the Tuner board,will solved this problems.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner signal board for the replacement.

Oct 08, 2010 | Sanyo DP32746 32 in. LCD Television

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Tv flashes on, just a flash, goes off, but audio is only thing that is working on tv


Ur LCD inverter board is dead.Must replaced this board to get the picture back.It usally a long board.Tries Websites Shopjimmy.com,ebay.com for part.

Jan 19, 2010 | Sanyo DP32746 32 in. LCD Television

1 Answer

My sanyo screen is black but there is sound tv worked fine this morning


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Nov 14, 2009 | Sanyo DP32746 32 in. LCD Television

1 Answer

Sound no picture


You need to look at two places, one is the backlight inverter board (hard to get to), thesecond place is the power supply module, look for burnt parts, bad capacitors.
http://en.wikipedia.org/wiki/Capacitor_plague

Nov 11, 2009 | Sanyo DP32746 32 in. LCD Television

1 Answer

Inverter opertion


Hello davidweldon,

If the inverter board is bad, I would suggest that you replace the whole board unless you have a SMD (Surface Mounted Device) rework station, and a background in electronics. I have worked on TVs where people have tried to remove SMDs and it never is an easy thing to do, so I would again suggest that you replace the whole board, because all of the components are SMDs.

Now as to your question, I have seen on these sets the majority of the time it is a driver transistor that goes bad.

I hope this helps,

Thank you,

Shuttle83
www.electron-age-technologies-llc.com

Nov 12, 2008 | Sanyo DP32746 32 in. LCD Television

2 Answers

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Easy way to Diagnose is get a known good CCFL from a laptop or LCD TV and start plugging it in to the existing Cathode's Ports one at a time. Generally its a bad CCFL on these multiple units.. (2,4,6) Bulbs.. Moniserv.com for replacements.

Goodluck guys!

Mar 17, 2008 | Sanyo DP32746 32 in. LCD Television

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I have this tv as well with the same problem. From the research I've done, one of the 16 ccfl's(backlight bulbs) goes bad and they all will not come on then. I have not been able to find a replacement ccfl for this particular tv. The ccfl size if 3mm x 711mm. I have a feeling the scope of this problem is very large with this particular tv and this forum represents the tip of the iceberg. Sanyo unfortunately makes a piece of junk and we have that piece of junk sitting in our homes with no good solution other than to say, dont waste your money on another Sanyo tv.

Jan 09, 2008 | Sanyo DP32746 32 in. LCD Television

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