Does anyone have the pin layout for the AS15-G chip? I've been searching but only found one for the AS15-F so far..
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AS15-G Pinout schematic?
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Re: AS15-G Pinout schematic?
G = Green (not color) packageAttached FilesNever 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=24809
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Re: AS15-G Pinout schematic?
Check out this bodge job I just finished on the AS15-G chip.
I was given a free 40" sony kdl-40z4100 that was diagnosed by a "sony technician" saying it was a bad panel. I brought home the tv expecting to just part it out but saw that the screen is just extremely overbrightened in white (typical AS15 failure). Usually I don't mess up removing these types of chips but somehow this one was not so lucky... Accidently stripped off 11 traces for the as15 chip....
I was just going to replace the entire tcon (55.40T02.C05) but the lowest priced was $125 and from china...
Took while to figure out where the traces led but eventually I figured out most of them. (I noticed much half of the pins actually go to ground) need to figure out how to put over the metal heatsink but in the end finally got the TV back to normal...Last edited by Glitcher; 12-21-2013, 12:41 AM.
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Re: AS15-G Pinout schematic?
I have a failed KDL-40Z4100 with the "negative image / white haze" problem which I am going to replace the AS15 chip on. During removal of the AS15 when the traces came off were you using a soldering iron or a hot air tool?
I am planning on using a hot air rework station but just wondering how easy the traces might be to lift off the board.
Also do you know if the AS15 was glued to the PCB?
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Re: AS15-G Pinout schematic?
I was using a hot air tool over the chip (Hot air gun). It would of probably been much easier with a hot air rework station, I need to get one of those soon. The chip seem harder to get off this board than usual but I don't think there was any glue used.
I only life 2 traces the first time when I removed the original chip. I placed a new chip on and soldered the two wires for the lifted traces but it didn't fix the contrast problem entirely (I didn't wire it correctly hence I had to add two little resistors when I finally got it right in the end) . I removed the new chip again and ended up lifting even more traces...Last edited by Glitcher; 02-12-2014, 12:16 PM.
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Re: AS15-G Pinout schematic?
Originally posted by Glitcher View PostCheck out this bodge job I just finished on the AS15-G chip.
I was given a free 40" sony kdl-40z4100 that was diagnosed by a "sony technician" saying it was a bad panel. I brought home the tv expecting to just part it out but saw that the screen is just extremely overbrightened in white (typical AS15 failure). Usually I don't mess up removing these types of chips but somehow this one was not so lucky... Accidently stripped off 11 traces for the as15 chip....
I was just going to replace the entire tcon (55.40T02.C05) but the lowest priced was $125 and from china...
Took while to figure out where the traces led but eventually I figured out most of them. (I noticed much half of the pins actually go to ground) need to figure out how to put over the metal heatsink but in the end finally got the TV back to normal...------------signature starts here------------
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Re: AS15-G Pinout schematic?
Hello everybody! I'll use this thread, instead of open a new one.
Originally posted by budm View PostG = Green (not color) package
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Re: AS15-G Pinout schematic?
I changed one Yesterday--And I changed one today Haha!
Will have to order some more. Ones Ive got at the mo are 'F' types but use 'em to replace Any AS-15 I find dead.
--Getting quite quick at 'em now, Under 5 mins today.
You can get some Strange effects from them, From Very Dark, to Very Light, Weird too high contrast--maybe negative picture, odd colour, loss of a range of colours, Colour reversal--List is endless as to the weirdness of the AS-15F and its friends, also--they don't always get red hot when they fail...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!
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Re: AS15-G Pinout schematic?
Originally posted by Alastair E View PostYou can get some Strange effects from them, From Very Dark, to Very Light, Weird too high contrast--maybe negative picture, odd colour, loss of a range of colours, Colour reversal--
Faulty T-CON & AS15-U? Only change AS15 fix it? Any fuse or diode?Last edited by PatrickSaw; 01-08-2016, 05:38 AM.
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Re: AS15-G Pinout schematic?
Originally posted by PatrickSaw View PostI have this (near to 100% white image, with sound).
Faulty T-CON & AS15-U? Only change AS15 fix it? Any fuse or diode?Last edited by PatrickSaw; 01-08-2016, 01:16 PM.
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Re: AS15-G Pinout schematic?
Best way to find if the AS-15 is messing round is to measure all the 'VGAMA' test-points--There's about 20 of 'em....
They should start low, at just under a volt or so and show a climbing voltage range, with around 0.5V higher with advancing VGAMA number test-point....
0.5V Vgama 1
1V Vgama 2
1.5V Vgama 3 etc, upwards.....
IF there's a large jump in the trend or a missing voltage on one or two--the AS-15 is stuffed. A chip thats too hot to touch is another (But not always) an indication....
Take all the voltage readings, and post 'em here with their ref numbers.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!
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Re: AS15-G Pinout schematic?
Originally posted by Alastair E View PostBest way to find if the AS-15 is messing round is to measure all the 'VGAMA' test-points--There's about 20 of 'em....
They should start low, at just under a volt or so and show a climbing voltage range, with around 0.5V higher with advancing VGAMA number test-point....
0.5V Vgama 1
1V Vgama 2
1.5V Vgama 3 etc, upwards.....
IF there's a large jump in the trend or a missing voltage on one or two--the AS-15 is stuffed. A chip thats too hot to touch is another (But not always) an indication....
Take all the voltage readings, and post 'em here with their ref numbers.
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Re: AS15-G Pinout schematic?
Originally posted by steviewonder View PostAnother point is avoid buying the cheap as15's from china-many are out of spec,or don't work at all!
BTW, AS15 and AS19 are not the same...
A microscope to check each leg connect is very helpful !
Terry
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