im looking for the data sheet for this part. part name is en220a it is from a ps to power the inverter.
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Re: dual rectifier
Did you try typing en220a into google - is it one of those parts. Sorry if you tried that
already - can you post a pic of it.
Please also can you update your profile with country and mains voltage.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: dual rectifier
Do you have a picture of the part, and the area of the PSU it comes from?
If the device is failed (usually shorted), then it may be possible to use an alternative compatible device.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: dual rectifier
the part go right behind the yellow and black transformer. it traces back to the plugs for the inverter. it reads 1.83 in diode check. and 70k in ohms. which seems very low.Attached FilesComment
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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: dual rectifier
That sounds fine, but to confirm -
Number pins 1-3 left to right.
Labelled (pos/red) (neg/black) respectively (use diode test.)
Test 1-2 should read ~150 - 700.
Test 2-1 should read single "1" or "OL".
Test 2-3 should read single "1" or "OL".
Test 3-2 should read ~150 - 700.
Test 1-3 should read single "1" or "OL".
That looks a lot like a Toshiba PSU.
The power module clamped to the heatsink (the one with lots of pins) can sometimes go faulty, though this usually blows the fuse.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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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!
----------------------------------------------
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: dual rectifier
Data sheet?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: dual rectifier
Common Cathode with Isolated tab, we ran into this problem before with the person did not order the Isolated tab version.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: dual rectifier
I remember that its here https://www.badcaps.net/forum/showth...987#post237987.
But the datasheet retiredcaps and I have given is for the TO-220F package
which is fully insulated, though it doesnt say so in the sheet other than by the package type.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: dual rectifier
i normally repair audio amps and such. im trying tv's now. different ball game now.
i tried google but didnt come up with anything. i did the steps they are good.
i found a bad zener diode over by the big ic now the relay click.
the problem was it was in a pawn shop on display and they left it on all the time until it went out if it helps any.Comment
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Re: dual rectifier
Yeah, sounds like it just wore out.
Zeners are difficult to test with a meter, but they most commonly fail shorted or open. If you test one way and get a reading around 500mV, it is probably okay. But if you test nearly zero or open both ways then it's failed.
Are you getting any power indication from the TV? Any LED?
Do you have a multimeter?
If so:
- Is the mains fuse OK?
- Does it give a standby voltage (usually 5V)?
- If it turns on does 12/24V come up?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: dual rectifier
yeah i have a fluke 75 and a leader 15mhz scope.
these are the voltages
12v- 11.68
6v- 6.4
24v-0
5v-5
power sig 3.28Last edited by timwebb22; 05-25-2012, 08:08 PM.Comment
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Re: dual rectifier
ok i was trying different grounding points while testing. i used the heatsink on the big ic as a grounding point and i see 28v on the 12-24v pin for the inverter and i get 19.6 volts on the pins on the inverter.Comment
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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.Comment
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Re: dual rectifier
ok. it looks like im missing the 12-24v for the inverter.Comment
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Re: dual rectifier
Can you post a top-down picture of the PSU?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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Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: dual rectifier
that dark spot must be from the factory. i seen it a few other power supplies online.Attached FilesComment
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Hi all, a newby question about a bridge rectifier I'm trying to identify.
I'm in the midst of reparing a battery charger in work which went pop, The bridge rectifier has shorted and took out a couple of other components. The rectifier in question has a part number KPB305G, and it looks like it's obsolete. Does any one know what I could replace it with?... -
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The issue is that like 1/2 of the full length, including 1/2 one wall, another entire wall, and one column, flickers after 4 or 5 minutes ON. Particularly it flashes staying OFF most of the time and flashing ON for 1 tenth... -
So My iPad was not charging and booting up . i went to a local technician and he checked with thermal and this Part marked in 1st Photo is Short.
So then i went on to boardview and downloaded the schematics and identified this part in 2nd Photo. Now i am confused what exactly is the part called ? where should i get this from ?
i contacted my technician and he sent me his BoardVIew screenshot in 3rd Photo. In his Boardview the part is called X2826.... Something
SO My main concern is what part should i order what should i search the name for ?
on Ipad... -
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In the Panasonic service manuals, both in the board schematics and in the part listing, the part numbers that are given are Panasonic part numbers instead of the actual part numbers.
This is especially annoying for small SMD components like diodes and transistors when you only have 1-3 digits printed on the component body.
For an example, look at the attached PDF.
Do you have a way to cross reference the Panasonic part number with the actual part number?
Thanks....07-03-2023, 08:16 PM
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