Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
That makes sense. One company does the plasma displays and ships them to the end user/company that then adds their own hardware/software/etc...to 'personalize' it as being what ever brand/features they want to sell.
I'll pick up that repair 'kit' and give it a wack. Just an eprom and the audio chip. Should be interesting. Shame it doesn't quite fit what this set did when it first took a dump. (First sign of problems was just no picture and good sound?. Then sits in a storage bin for...
Tedybear
Senior Member
Last Activity: 05-03-2018, 06:18 PM
Joined: 09-09-2014
Location: Fulton, NY
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Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
The "D" board oddly enough is Panasonic on the chips. Kinda looks like this one happened to be built when Sanyo was taken over by Panasonic. As it has a mix-match between the both.
I do not remember if we had a "white screen" or not. I'll nip up one of the repair kits and move forward that way.
Thanks for the reply!!
S-...Leave a comment:
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Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
D board is all over eBay as "New Other" or "Used working pull" and it's under 15 bucks in almost all cases.
I'll hold off until I get a response about the question:
If I remove completely the "Main Board" with the cables to the speakers and the ribbon type cable to the "D" logic board. So that board is removed....
I plug the set in and get the same response. Two clicks and then 1 relay click. The plasma still fires...Leave a comment:
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Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
Quick question. I removed the main board from the set. Just for the heck of it I plugged it in with this board not installed.
The set still fired up and did the exact same thing with the relays clicking and the glow from the plasma screen.
If the main board was removed from the system--and the only other board left 'controlling' the power supply (for a lack of a better word) Shouldn't the set remain totally dead? I'm starting to wonder if this board is good, and the issue might reside with the 'd'...Leave a comment:
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Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
Have to love it when companies merge and combine resources. Like the Philip set with Samsung parts in it. Nothing like Badge Swapping. Reminds me of a local firm that does two brands of light bulbs (westinghouse and GE.) Major company did a bulk order of bulbs from the supplier and was dead set against one of the name brands. So they returned several thousand of bulbs back to the factory--The factory buffed off the brand ID mark on the bulb and reprinted the other company ID mark where the old one was. Both...Leave a comment:
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Re: Sanyo Plasma Model: DP42740 Has glow but nothing else.
I get the feeling you're on the mark.
I've been itching to brush up on my SMD work, and this set didn't cost more then a few bucks. I'll likely grab the repair 'kit' and give it a wack. Worse case I'll have to invest in a replacement board for a few bucks. LOL. Or I might just be that "Good". (What's that saying? Pride comith before the fall?)
Sense I haven't a clue really on plasma sets. Which one would be considered to be the "D" board. (like I said. I've...Leave a comment:
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Sanyo Plasma Model: DP42740 Has glow but nothing else.
Hello all.
Been having pretty good luck with LCD's and such, so I did manage to nip up a cheap plasma for repair. (I know, glutton for punishment)
It's a Sanyo DP42740 Chassis: P42740-05
Please let me know what, if any picture would be needed and I'll follow suit. However all the capacitors seem to be in extremely good condition. The set itself has a build date of 2012.
Woman I picked it up from described the initial issue: No picture, has sound. She then put it into a storage bin until she found my advert. The storage bin appears to... -
Re: General Parts and repair question
LOL.
I considered doing that from the onset. I do not trust my family with a flat screen TV. They have 4 dogs that are kinda on the hyper side and they get running through the house and nothing is safe!
I was thinking maybe selling it at a reduced cost as a 'starter' set. I normally try to double my investment. eg: Pay $10 for a broken set, $25 for the repair parts. And then sell it for about $70 to $75. It's about 50 cheaper then any of the local used stores sell them for. I'm not doing...Leave a comment:
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General Parts and repair question
Okay,
Picked up another Emerson 32" flat screen set.
It had a common issue with the blowing of the main fuse. I decided upon running the make/model via eBay for a repair kit that matched the board installed in the set.
Now I am very very sure that it had been repaired before. The heat sink grease clearly was put on by hand and done very sloppy. (Factory/machine install would have been a very clean and 'conservative' apply, not gopped on)
The kit came with all the related diodes, resistor, zeners... The Resistor did not match what... -
Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
It's no longer worth it for me to continue on with this. It took 2 weeks to get the mosfets in (had to order in from china) and the buffer chips. I only ordered in 2 of the buffers, so if I replace them--and another blows?
Sometimes you have to know when to call it a day. I'm already into this by about a hundred, and while the intent was to resell at first-it's already at the max that I would invest to repair to resell. And I can't really in good faith sell this as a 'repaired' set knowing how...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
side bar note: When I do sell things on eBay like this? I always do full description and let people know what the score is. And I won't sell that Y-Board or the buffer boards due to them being probably still hosed.Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
Well. Pretty sad news.
I had to call the family to surround the patient.
Replacement of the blown mosfet went well.
Powered the set up hopeful for a pulse.
And it promptly fried yet another buffer chip in a different location on the board.
I only purchased two of them, one for a spare in case I nackered it during the install.
I'm going to part out the set on eBay. I know the power supply board is in mint shape. (full recap...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
Oddly enough that's why I started messing around with it again. I hate to see stuff hit the landfill for silly reasons. We use craigslist to locate the repairable ones and offer a few bucks to the owners. And I tell 'em upfront that if I can repair the set, I'll likely resell for cost + a percentage for my time. Most are pretty cool with it.
Other posters advertise "Free Recycling of your broken flat panel TV" and they repair them and resell them in pawn shops, or harvest working board...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
Acetone based with water is the only thing on the bottle. There might be a better method posted on the internet somewhere. It's either made me soft in the head, or the 'glue' soft enough to get a fingernail to lift the stuff off.
They do repair these boards at repair services listed. I'm willing to bet a fiver they won't give up that knowledge easy if asked. So I'm experimenting.
S-Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
I was close!! That pad is the part left under the chip on mine. (The chip was toasted and crusty, so that part is still hanging on the board)...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
I'm a bit lucky in that respect. Wife used to work for a company that made electric meters. She was on the 're-work' bench 8hrs a day for a number of years. She's been kinda nudging me to buy a new solder station and maybe a combo unit with the hot air.
I did see several youtube videos where people used a standard soldering station to replace surface mount chips. Interesting use of solder paste, flux...Seems they skim coat the board itself with solder and then just do a touch/stick/solder...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
Sorry about vanishing and not responding quicker. TWC went "Poof" in my area for about 3-4 hours.
I'll update once I replace what I know is shorted out and those two capacitors that are domed pretty bad. (That can't be helping matters any)
Might take a few days to get parts in, so I'll park this on the back burner until I get the parts in.
My thanks for everyones help with it. It's a far cry from the LCD ones and the DLP sets I've had excellent luck with.
...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
Minor update of sorts. Tested a couple of the mosfet's on the side with all the red capacitors. Thankfully the circuit seems to mirror. So I pulled and tested two from one row. Good. I then compared what those two 'good' ones did in circuit, against the two ones I didn't really want to pull.
Okay... That brings me to: B20NK 50Z GK138 VW CHN 704
This is the one that was pointed out in picture 5 (Thanks for pointing it out!)
Okay. Had to pull the surface...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
I'll double check. Currently I'm not quite 100% after all that pulling, drilling, and tugging. (Feel like I went 3 rounds with Frazer)
I get the feeling the basic repair kit should be ordered in, questionable parts replaced (heck, the ones that tested bad)
In order not to pop anymore buffer chips--Can things be fired up to check for that fault LED with the edge connectors to the panel being left unplugged--or would that do more harm then good.
Honestly...Leave a comment:
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Re: Phillips 50pfp5332d/37--BlownUP Buffer Chip!! NO PICTURE ON SCREEN!
I think the server gods must be taking pity on me. (just got back from having a wisdom tooth pulled out by an oral surgeon....took over an hour doing it..and over an hour waiting for my cardiologist to give clearance for the procedure.)
Sense the server seems to want me to upload photos.... The ones behind the red caps. Those I'm wondering about checking in circuit, because they are in a PITA location.
The ones across from the edge connectors have been checked....Leave a comment:
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