Re: Sanyo DP42849 - No Power At All
I think STR-chip is defective. You can try replacing it.
I think STR-chip is defective. You can try replacing it.
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Re: Sanyo DP42849 - No Power At All
Okay. Should I pull it out of circuit and test it, or just go ahead and order it?Comment
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Re: Sanyo DP42849 - No Power At All
With power off, you can test from pin 5 to 3 on ohms mode, in circuit, then pull device and check again out of circuit.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Sanyo DP42849 - No Power At All
On Ohms 200, I get 15.6.
Is there anything else I should test? And were any of the caps bad or should I leave them alone?Last edited by NihonNoir; 01-23-2014, 10:06 AM.Comment
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Re: Sanyo DP42849 - No Power At All
15.6 ohms is very bad. It looks like you have found the fault...
The caps are very high quality on this model, I would not expect them to be at fault.Last edited by tom66; 01-23-2014, 10:10 AM.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
so what went wrong then ?
fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Sanyo DP42849 - No Power At All
Roger that. Any advice on removing this chip from the board?Last edited by NihonNoir; 01-23-2014, 10:37 AM.Comment
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Last edited by multimeter; 01-23-2014, 10:34 AM.fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: Sanyo DP42849 - No Power At All
well we all learn by making mistakes at times i would add some fresh solder to each pin of the ic your removing then use your solder wick these are also very usefull in my opinon if radio shack sells them http://www.amazon.com/Parts-Express-.../dp/B0002KRAAGLast edited by vinceroger69; 01-23-2014, 10:42 AM.Comment
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Re: Sanyo DP42849 - No Power At All
Well, I've definitely learned a lot and I'm really enjoying it, aside from the frustration.
I actually ordered that sucker last night with the expectation that I'd never be able to get this IC up. I've been practicing on an old Genesis board I had lying around, and I had such a hard time getting the caps out. The solder would hardly soak up into the wick. I managed to get 3 of them out, and I'm quite sure I've ruined them all.
But the solder around this IC came up much easier. Different quality of solder, maybe. I dun know.
Hopefully I haven't ruined the board or anything - I did make an effort not to leave the iron tip on it for no more than 5-10 seconds.
And I got the same readings with it off the board, so I guess it's a dead spider.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Sanyo DP42849 - No Power At All
Oh, is Digikey the best place to get it? And is this the correct part: http://www.digikey.com/product-detai...69H-ND/3661844
. . . should I order 2 just in case?
Thank you all!Last edited by NihonNoir; 01-23-2014, 11:16 AM.Comment
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Re: Sanyo DP42849 - No Power At All
thats why before i remove any faulty parts if possible i add fresh solder first makes it easier for me any way and im still learning as well.Comment
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Re: Sanyo DP42849 - No Power At All
One thing of note, just noticed this, is that is 8-DIP type. Ideally you use 7-DIP which has that missing lead. You can still use 8-DIP but you would have to cut off the excess lead, which has no function.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
Thanks for pointing that out. I noticed it as well yesterday and had a chat with a rep before ordering it - he checked it and confirmed that pin 6 is not used. I'm assuming that means it just isn't there. If not, I'll have to cut it.
Just out of curiosity, what could have happened to it to cause it to stop functioning?
Thanks again for your help!
Hmmm - http://www.geek.com/chips/ic-failure...recipe-554945/Last edited by NihonNoir; 01-24-2014, 11:36 AM.Comment
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Re: Sanyo DP42849 - No Power At All
I won't go into too much detail but basically it's a random probability that a device will fail.
So a device might have an MTBF (mean time between failures) of 50,000 hours, that's pretty typical for consumer electronics. Does this mean it will last 50,000 hours? Not necessarily. It means that if you had 50,000 widgets in the field, on average, one would fail every hour.
Other things, it can also be damaged by a power surge or moisture getting into the device before the soldering process, leading to early failure.Last edited by tom66; 01-24-2014, 12:15 PM.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
Thanks for the info, Tom. Hopefully it's just a random failure, and not indicative of a larger problem with the TV.
Got part in today. From ground pin to pin 5, I'm getting a "1" on it, whereas on the old one I got 15.X.
Is that okay?Comment
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Re: Sanyo DP42849 - No Power At All
Yep, that looks a lot better.
If you want to avoid smoke, you can try this trick:
https://www.badcaps.net/forum/showthread.php?t=32748Please 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
Thanks, but that's a bit over my head.
I've bought 2, so if something happens, I'll have a backup at least.
When I solder this chip back on the board, will that diode that reads as shorted (but good out of circuit) read correctly again?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.
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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.
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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... -
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