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Equipment Repairs => LCD TV forum => Topic started by: VampirorNight on January 28, 2011,15:13:28

Title: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 28, 2011,15:13:28

Hi, :sign0085::sign0144:

I am after some help with this TV. It turned itself off with a blue flash coming from the back with a smell of burning. I changed the fuse and the same thing happened.

I removed the back to have a look what was causing the flash and it is coming from the transformer on the PSU. I googled the trans model number LCL-1608WH AND 608980002050 and came across this site.

I am guessing the transformer is knackard, Is it easy to replace it? Will the PSU still have residual current in it? If so how do I discharge it? I have a little bit of soldering experiance.

I haven't found a site where I can get one from, can anyone surggest a supplier? or where I can get a new or second hand PSU model number ls1904006a ver 1.0.

Thanks for any advice

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: chrissie jones on January 29, 2011,03:56:45

send me a piccie of the power supply please.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 29, 2011,04:51:28

Hi thanks for the reply.

Here is a pic I found on google of the PSU. It looks identical

Cheers

Edit: the transformer that flashes is the one at the bottom of the pic.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: chrissie jones on January 29, 2011,05:08:16

can you send me a photo of the one your haveing problems with.clear photo please.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 29, 2011,13:14:18

Sorry was unable to take a pic this morning so uploaded the image I found online.

Here is a pic of the PSU, hope this helps. Like the other pic is the transformer at the bottom of the pic that gives the flash.

Thanks

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: sparky on January 29, 2011,17:50:39

hi
if its bottom left its a coil not transformer
unsolder it and check under the coil for bad
soldering
dave

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: chrissie jones on January 30, 2011,02:52:24

turn the board over and look for bad soldering or burning marks.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 30, 2011,05:08:36

Is it ok too touch the board? Do I need to discharge it first? If so how?

Quote from: sparky on January 29, 2011,17:50:39

hi
if its bottom left its a coil not transformer
unsolder it and check under the coil for bad
soldering
dave

I have cropped the image with the componet that was flashing.

Thanks

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: sparky on January 30, 2011,06:23:47

hi
its a coil not transformer if you are not sure what to do
leave well alone if main smoothing block is still charged
be careful can do a lot of damage try local tv repair man
should be able to help you
dave

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 30, 2011,06:45:37

I understand the dangers if messing around with PSU's and not to touch components due to residual current.

It hasn't been plugged in for 3 days, do you think the current may have discharged?

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: sparky on January 30, 2011,06:48:20

hi
could be have you a meter if so check the readings
dave

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: VampirorNight on January 30, 2011,07:09:10

I took a chance and removed the board, I don't have a multi meter to check but noticed I could turn it over with the cable that joins it to the next board.

I cannot see any burn marks on the underside of the board. There is flux residue next the where the flex is soldered on to the board. I have attached a pic of it.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: sparky on January 30, 2011,09:23:54

hi
you will have to remove coil from board and look at the pins
of the coil
dave

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: martcool on May 02, 2011,18:28:49

hi there can u help plss i have the same power supply as this my one has just gone off no power at all to the tv put meter on it have power coming in ok all the caps look ok is there a part on this board that gos a lot that u no thanks for your help martin

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: chrissie jones on May 03, 2011,02:47:45

have got a piccie of power supply.

Title: Re: Acoustic Solutions 19"LCD TV ASTV-3619WS
Post by: martcool on May 03, 2011,08:36:12

hi there yes thanks for geting back to me i have taken some pics hope u can help thanks