Re: Sanyo DP42849 - No Power At All
Yes, you want the TV to do that power light up briefly.
Yes, you want the TV to do that power light up briefly.
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Sanyo DP42849 - No Power At All
Yeah I just realised it doesn't even bother trying to turn on unless the other boards are plugged in.
0 on voltage test when power button is pressed.
1 on resistance test when TV is unplugged.Comment
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Re: Sanyo DP42849 - No Power At All
On the resistance test, I do get a reading when it's on 20M - 1.45Comment
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Re: Sanyo DP42849 - No Power At All
BTW - I retried that hair dryer on caps thing yesterday too, since I put the new IC in, but it didn't work.Comment
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Re: Sanyo DP42849 - No Power At All
You using 20VDC scale? 0.00V?
No short, so it must be in ckt that feeds that part.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42849 - No Power At All
Yes - for 20DCV, I got 0.00.
But I did get something on resistance test when moving up to 20M.Comment
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Re: Sanyo DP42849 - No Power At All
Now I need you to test the macro mode of your camera. Best pic you can get of area around J38 (bottom, green side)? Need to see small parts and traces.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42849 - No Power At All
I posted some pics in #214. They should zoom in when you click the magnifying glass. Do you need closer than that?Comment
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Re: Sanyo DP42849 - No Power At All
Didn't see those. I've highlighted some points to ohm out. Please test between the RED and each BLUE points in 2000 ohms. If I have the circuit right, they'll all show near zero.
Also, the part# of IC301 would help tooAttached FilesPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42849 - No Power At All
I pulled the board out to test.
Point 1 - 0.01
Point 2 - "1"
Point 3 - "1"
DDA002B
PAA0909GComment
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Re: Sanyo DP42849 - No Power At All
OK, let's try again. Test as before.
DDA002B is available, but appears to be a proprietary Delta part (most likely specifically marked rather than dedicated design, but it makes it hard to find a datasheet for it.)Attached FilesPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42849 - No Power At All
I found a C variant as an ON SEMI component, 19pin. Do you think this pinout helps at all?
http://pinout-circuits-images.dz863.com/30/DDA002C.jpgComment
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Re: Sanyo DP42849 - No Power At All
Nice one... Looks like a good matchPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42849 - No Power At All
you're welcomeComment
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Re: Sanyo DP42849 - No Power At All
You guys are really great at this, and I appreciate all of your help. I think if I were better at this, we would be farther than we are :/
I will retest in a bit, but I have a question. Someone on my local Craigslist just posted my exact same model and chassis for $35. It stays turned on, but no picture.
I'm thinking of offering him $20 for it and trying the power board in mine. I've been eying boards, and my chassis is out-of-stock everywhere, and if it ain't, it's $100 plus. There's one on eBay for $60, but what a hassle if it doesn't work. At least this way, I can see it working and only be out $20 if it doesn't fix mine.
What do you think?
Here's a thread on the same TV, same problem.Last edited by NihonNoir; 01-30-2014, 12:14 PM.Comment
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Re: Sanyo DP42849 - No Power At All
i would try to get the one of craigs list if it was me before it goes!Comment
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Re: Sanyo DP42849 - No Power At All
Parts are worth more than $35, it is a good deal even @$35.Last edited by budm; 01-30-2014, 12:53 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sanyo DP42849 - No Power At All
No picture, there is a chance that big inverter transformer is bad, (if no backlight) but you can swap them over, it's just a lot of work.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
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The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
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