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My Sanyo dp42d23 tv has sound but no picture. How do I figure out what part is bad? Thanks

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I did A LOT of research after experiencing the same exact problem with the same tv. This tv does not have inverter boards it has an LED driver and its on the main power supply board. I was able to get a power supply board online for $24 (with a 2y warranty). I have never repaired a tv before but what I found out is this: If you have a steady green power light, sound, and can faintly see the menu when a flashlight is shinned in the tv, then its more then likely either the led driver (on the power supply board), or the LED lights in the tv. I do not have a voltage reader so Im using my best guess based on what ive read/learned online. I just replaced the power supply board the other day. It was easy but i guess that was not the problem (or the board i just paid for is bad). So it has to be the LED lights. Due to the power supply working, and the menu showing up....the main board and t-con board should be good. There are only so many parts in this tv! lol. I think the LED's are around $20-$50. STILL..even if that is the problem i just paid $44-$74 for a tv that i payed $350 for new. Not bad. If this turns out not to be the problem...i can return the parts and keep searching for the right fix. I am stuck right now though at trying to figure out how to get to the LED lights. This thing is more locked down then fort knox..lol. There are VERY LITTLE threads, posts, etc out there on THIS specific tv: Sanyo 42in hdtv DP42D23. So I cant even get instructions on how to get it apart. I got the back and speakers off. I think there are tiny black pegs keeping the tv frame on? Wish me luck! Lol.

Posted on Dec 12, 2017

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  • Sanyo Master
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Do the flashlight test to see if your inverter board is ng.

Posted on May 05, 2017

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Posted on Jan 02, 2017

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SOURCE: Please tell Sanyo flat screen TV model #dp42d23

If it is less then 1 year old Sanyo may fix it free . other wise get a quote as it may cost the price of a new one.

Posted on Oct 29, 2014

gopakumarg43
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SOURCE: Sanyo TV model dp42d23 flat screen pictures blinking on and off can hear sound though which board needs replacing?

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Posted on Jan 05, 2017

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1 Answer

I have a sanyo 42 inch dp42d23 has sound but no picture. we were told to look on youtube to fix but its not helping. what can be wrong?


Press the MENU button on the remote. If there is no menu wording displaying on the screen, then it's the backlight. Shine a torch onto the screen panel and see if you can see a picture (yes, TV has to be on and tuned in). If you see a picture, then it'll either be the backlighting or the backlighting power supply.

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My Sanyo '42 inch tv model #DP42D23 screen went black, volume and channels still work , but no picture


Check and replace the damaged components at its back light inverter section circuit. If you wish to get more details visit the site linked here. http://electronicshelponline.blogspot.com/

Mar 06, 2017 | Sanyo Televison & Video

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Sanyo TV model dp42d23 flat screen pictures blinking on and off can hear sound though which board needs replacing?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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How do I connect my Sanyo DP42D23 TV to my Sanyo FWSB415E soundbar?


I doubt that the instructions say to connect to a headphone connector on the rear of your TV. More likely, the supplied cable connects to some other kind of AUDIO output. It might be identified as EXTERNAL AUDIO or AUDIO OUT.

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TV will not turn on. Red light stays on.


Could be an open fuse or power supply failure

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1 Answer

Please tell Sanyo flat screen TV model #dp42d23


If it is less then 1 year old Sanyo may fix it free . other wise get a quote as it may cost the price of a new one.

Oct 29, 2014 | Televison & Video

1 Answer

Does my Sanyo tv have a VGA port? If so, where would it be located?


The ports should be located on the left side back of the set.
Look for the video input RGB.

May 02, 2014 | Sanyo Televison & Video

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Picture tube


no you have no vertical bad chip ic

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