Help need the service manual please,
can only get the instruction manual
can only get the instruction manual
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Re: panasonic tx-p42gt30b
Whats the fault with the set....?
Chances are, someone's had it before.....TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM! -
Re: panasonic tx-p42gt30b
Yea that's a good guess, did few basic checks, 1 fuse blown out, but to me looks like some had soldier it on, like snip the legs from the previous fuse the soldiered the new on.
Also notice the ribbon band cables not all have been closed. Some ribbons just hanging loose from connections.
Going try add photo, looking for cable for my phone, in the mean time this fuse has
yellow, black, red, blue bands. not sure if that's correct rating.
Seen a board on fleabay, but the fuse just had a single silver band.
On the board it says something like T4AH not sure if that's for the fuse thought as were its written.Attached FilesLast edited by Jahson; 05-13-2014, 03:01 PM.Comment
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Re: panasonic tx-p42gt30b
Its a Time-Delay type 4A fuse....
Thats a normal type fitment of fuses in a lot of Pan. sets--nothing has been disturbed with it before....
Chances are there's a short MOSFET or summit in that board...TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: panasonic tx-p42gt30b
Cheers Alastair E, ordered few spares fuses, in-case it blows again.
Have not checked any diodes or mofets as yetComment
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Re: panasonic tx-p42gt30b
Quick update, tested all I could on power board, found a blown ceramic resistor or is it a thermal fuse? also, next problem is cant locate anywhere to get one.
Sorry for board photo upside down, only trying to show were the resistor is located.Attached FilesLast edited by Jahson; 05-17-2014, 04:01 AM.Comment
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Re: panasonic tx-p42gt30b
Std 7W Wirewound 15 ohm resistor.TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: panasonic tx-p42gt30b
when you say standard, 7w 15ohms resistor, I could walk straight into maplins & get, its got 3 pins.Comment
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Re: panasonic tx-p42gt30b
http://cpc.farnell.com/te-connectivi...20This%20Range
cant seem to find any on ebay?
http://www.maplin.co.uk/p/wirewound-...-resistor-l15r
was all three pins soldered to the board or just two?Last edited by vinceroger69; 05-17-2014, 04:52 AM.Comment
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Re: panasonic tx-p42gt30b
yea I checked ebay, was thinking cant get on ebay, im doomed, no way I could walk into maplins then?
when checked on meter the working one reads
Top left too Top Right = 0.04
Bot Left too Top Right =15.3
Faulty Reads
Top left too Top Right = 0.04
Bot Left too Top Right =O.L
In photo its got the pen markingsComment
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Re: panasonic tx-p42gt30b
Looks like it could be a fused resistor, 15ohm 5WAttached FilesComment
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Re: panasonic tx-p42gt30b
yea tw2005 that sound about right, just wasn't sure, think I said thermal fuse thought.
Need to get my hands on one.
Just had a brainwave, stand well back with amazement, could I but a 5w 15ohm wire wound resistor on the bottom left & top right pins?Comment
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Re: panasonic tx-p42gt30b
On second thoughts I'm thinking that symbol may simply mean it's a fusible type resistor, the cct diagram shows no connection for that single lead but would be nice to get a clear sharp picture of the foil side of the board where that solders in.
need to see the cct, some of the other guys have more PSU knowledge but I'd be thinking the connection will be across the 2 closest pins.
Need the photo and probably some other eyes on it. 240AC is passing through that to the rectifier bridge. You checked that too? I'm assuming it's R100 that we're dealing with. or??
Photo was real fuzzy.Comment
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Re: panasonic tx-p42gt30b
ftp://helpedia.com/pub/temp/datashee...c_TC-P42GT30A_[SM].pdf
should get you by, has TNPA5390 PSUComment
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Re: panasonic tx-p42gt30b
cheers tw2005, yea it is r100 and the board is tnp5390a, cant find my camera lead, so photo from my phone.
Will take the photo back & front.
Fuse F102 has been removed, also R100 from the boardAttached FilesComment
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Re: panasonic tx-p42gt30b
does camera use SD card and you have a laptop or PC with SD reader? I've done that in a pinch.Comment
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Re: panasonic tx-p42gt30b
Ok, just found a board using the same style of resistor and yes, that top solo leg is no connection, across the 2 close pins needs to be 15ohms but I would be using a ceramic wirewound there. If you still have an issue it will blow with a lot of energy especially if there is dead short on the mains.Comment
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Re: panasonic tx-p42gt30b
But R227 is the same and does not read open, I have undone the leg to test.Comment
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Re: panasonic tx-p42gt30b
I realise that. On the topside where R100 was. Pin 1 is no connection, i.e. has no involvement with the rest of the cct.
pins 1 & 3 are tied or the same connection(internally on the resistor)
pin 2 is the other end
So ignore pin 1, pin 2-3 is the 15ohm 5W fusible link.Comment
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Re: panasonic tx-p42gt30b
maplin dont carry 5 watt only 3 and 7 it seems
http://www.ebay.co.uk/itm/Ceramic-Wi...item27dff4404aComment
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Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hello! yes I know there is already lots of information about this issue. I have a Panasonic TC-P55ST50 that originally displayed an 8-blink error code. Following the troubleshooting flowchart, I ended up replacing the SS board. However, even after replacing it, the issue persists. The TV turns on and stays on without displaying an image, and continuity is confirmed on all connectors. What am I missing here🤔?
Ok Im a mechanical engineer ...but I thought I was able to follow a rather simple flowchart for electric troubleshooting 😂.
TV Model: Panasonic TC-P55ST50
...11-20-2024, 08:52 PM -
Hi I wonder if anyone might be able to steer me in the right direction. I have this Samsung UE46ES8000 TV and it went bang during use. The main fuse on the PSU board is open. I've checked every diode/mosfet/transistor I can see and nothing appears to be short to cause the fuse to go. The DC output of the bridge rectifier is not short either. I've seen online that some of these models are known for having their PFC mosfet or other mosfets shorting and blowing the fuse but i'm not seeing that here. If anyone aware of these models having any issues to cause this? I'm reluctant to just replace the... -
Hi guys,
I'm inexperienced with electronics repairs, I've done a little bit of soldering caps and whatnot, but i have a blown fuse on this mimaki printer I got which I have bought a replacement for.
How do I remove this type of fuse (see picture)...it kinda looks like it would pull out of that bracket but it didn't come at first pull and I didn't want to brute force it incase it's soldered on there like most of the rest of the components.
Anybody know how to remove this type of fuse?
(The fuse is toward the bottom of the image labeled F2)... -
I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in....
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