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Equipment Repairs => LCD TV forum => Topic started by: Turnip on March 27, 2009,08:09:43

Title: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on March 27, 2009,08:09:43

Hello Folks,

  Have one of these where picture is initially static vertical coloured lines, fading to a dark blue screen. With Scart input there is an occasional dark blueish picture over lower part of screen but no sound. Sometimes, for a few seconds a normal snowy screen appears. Eventually screen goes dark with backlights still working.

   Any Ideas - Chris Steele.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: ex ttg on March 30, 2009,07:03:32

Hi chris
If it wasn't for the intermittent white noise i'd have thought lvds or screen driver.Have you taken av out to another set?
But i think with the range of symptoms i'd be looking for a ripple from the psu

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: brian on March 30, 2009,07:55:23

Hello Chris,
Checked on Philips tech.
they describe this fault; "Vertical coloured lines at start up,after 1min. pic. becomes darker?"
Unfortunately the cure is to rplace the screen display panel!!
Hope this helps!
cheers
Bri.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on March 30, 2009,08:30:12

Hi Nick and Brian,

    Thanks for your help, seems that the set will join the growing pile. I'm sure there'll be gold there at some point, if I can keep finding the space.  Incidentally, am I right suspecting the 'Screen display panel' is the front bit with the tubes in - not just the driver or whatnot ?

  Chris Steele.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: brian on March 30, 2009,10:25:52

Hi Chris,
Afraid so.
Cheers
Bri.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on March 30, 2009,11:10:24

Hello Brian,

  Thanks for that,

      Do I guess that one needs to be 'Kosher' in some respects to view that 'Philips service' site. Also, do you know of some for those nifty Chinese designs that give us so much fun in trying to work out how they function (for only the guarantee period without a cooling fan, and failing a few days after) just from chip info ?

   Some say it's those capacitors, as '85 types gave little trouble in the old days, but if they don't bulge or weep, and there's lots of them - where to start ?

    Thanks Chris.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on April 11, 2009,13:21:23

Hi folks,

   Had given up on that  Philips 'till the last post. Well - must admit I have hated anything 'Philips' quite seriously since CP90's when time consuming P/S - SM components and Micro problems that few customers would pay for, made life less than profitable.

   In hopes of an easy, if unlikely, solution - Chris.

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: adm2007 on May 13, 2009,08:18:33

had this fault b4  it is faulty display but sometimes if u got time take display out pcb on top of display connects with ribbon through display to side pcb there r test points on pcbs if lucky you can find fault by testing each test point then hard wire faulty connector presto workin display all depens on type of display

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on May 14, 2009,11:56:16

Hello folks and adm2007,

   Many thanks for that, will check it out and report back - Chris.

   See what you mean when you say it takes time. Note that top test points are 300's and 400's side ones - rather less in number are all 500's.  Question is - which goes to which - you wouldn't happen to know, perhaps, and what is 'Presto' in servicing terms?

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: daz on January 21, 2010,09:35:09

hello all
i know this post is a bit old, but just came across this fault myself,
checkout this web adress:
 http://teleservice.xooit.fr/t46-MODIFICATION-DALLE-LCD-QD26-EQUIPER-CHEZ-PHILIPS-ET-THOMSON.htm
its in french but it has pictures
there solution works a treat.
daz

Title: Re: Philips 26PF3320 LC4.3E AA Chassis
Post by: Turnip on January 21, 2010,10:59:09

Hi folks, and thanks Daz,

Checked site and now have the three pics. My own set scrapped for spares in May last, but next time - Chris