Mulja tv repair portal

Equipment Repairs => LCD TV forum => Topic started by: mac18 on March 23, 2009,15:16:36

Title: technosonic lcd1908 transformer
Post by: mac18 on March 23, 2009,15:16:36

Hi does anyone know where I can get a transformer for a Technosonic lcd1908 ,there are markings on it as follows (MSC) ZY-T0045. The one fitted starts to make a noise after about half an hour or even another PCB for this model.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on March 24, 2009,11:36:18

its not the transformer rattling its the cap in the snubber network, change from ceramic to a mylar type, i will cure it.
tv tony

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on March 24, 2009,17:11:43

 Thanks again Tony but can you tell me what board location ref is for this cap.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on March 26, 2009,06:51:15

hello,
we dont have any in at the moment but its the one on the primary side of the psu, its a small blue disk type ceramic, change it to a mylar and you will be ok
tony

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on March 28, 2009,15:16:12

Hi, changed the cap with a mylar and about an hour later still getting the noise from transformer.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on March 29, 2009,03:36:02

odd. we bought about 500 of these from seimsenn, ill post you a transformer if you wish

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on March 29, 2009,04:20:19

That would be great could you send email with details for me to send payment.
 there is a noise comes from the transformer for a few seconds when its switched on at first then no noise for about an hour.
Thanks Alan.

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on March 29, 2009,09:36:10

Hi again just run this set with the back cover off and over a period of two and a half hours no noise at all
put the cover back on and after ten minutes the noise is back again.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on March 30, 2009,15:01:23

try spacing the two inductors apart at the top of the panel, we have known this to cause ringing as well, in severe cases we have had to put one on the print side of the pcb, well crack it,
tony

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on March 31, 2009,18:16:37

Hi again tried separating the two inductors and its just the same cover on noise with in the hour and cover off no noise at all beginning to think along the lines of the transformer getting to hot or just faulty.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on April 01, 2009,05:14:46

right transformer on its way, pm me your addy, cheers ,
tony

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on May 04, 2009,02:38:05

Think Tony has forgotten about sending me a transformer as the weeks pass.

Title: Re: technosonic lcd1908 transformer
Post by: tv tony on May 04, 2009,04:01:14

no, not forgotten, been away, i know theyyre a bit tricky to remove, im on it, sorry, soon,
tony walker

Title: Re: technosonic lcd1908 transformer
Post by: mac18 on June 22, 2009,03:22:23

Tony any luck with a transformer for me yet, beginning to think the skip is the best place for this lcd.