Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

Sony Vaio LCD flickering

Talk about "WhatEVER !"..
Post Reply
Message
Author
ThinkPad560X
ThinkPadder
ThinkPadder
Posts: 1192
Joined: Fri Mar 13, 2009 2:47 am
Location: New Alexandria, Pennsylvania

Sony Vaio LCD flickering

#1 Post by ThinkPad560X » Mon Jun 14, 2021 5:33 pm

I got a nice clean Sony Vaio tower model PCV-RS422 and the LCD is a Sony 18" SDM-M81. The screen didn't come with a AC Adapter and uses that 4 pin female adapter plug that the ThinkPad 755 era models used. I have a ThinkPad 760 one and using it, It outputs 20V-10V I just ordered a official Sony 18v Ac adapter now. When I have the screen plugged in VGA or DVI it will come on then start to flicker. cables are fine as they are used off my IBM LCD screen. It displays the picture fine just keeps flickering and you can hear a flick sound but that maybe the built in speakers on the screen. I don't know if it is the AC Adapter do it or not.
IBM: 760XD,770Z,600X,240,560X,560Z,570,380Z,390X,i1200,i1400,
A22m,A22e,A30,G40,R31,R40,R50,R60,R61,R400,R500,
T20,T23,T30,T40,T43,T60,T61,T400,T400s,T500,W500,W700,
X21,X30,X41,X41T,X60,X60T,X200,X200T,X300,X120e,Z60m,Z61tT410T410sT510T420T420sT520
T430T430sT430UT530T470T470sT470pT570SL500L470L570
Top
ThinkPad560X
ThinkPadder
ThinkPadder
Posts: 1192
Joined: Fri Mar 13, 2009 2:47 am
Location: New Alexandria, Pennsylvania

Re: Sony Vaio LCD flickering

#2 Post by ThinkPad560X » Mon Jun 14, 2021 6:31 pm

I took the screen apart and checked everything. It seems ok and the caps on the power board and lcd inverter are good. The click sound is the back light coming on and off. So don't know if this IBM AC Adapter is too much power for it or the LCD light is going bad.
IBM: 760XD,770Z,600X,240,560X,560Z,570,380Z,390X,i1200,i1400,
A22m,A22e,A30,G40,R31,R40,R50,R60,R61,R400,R500,
T20,T23,T30,T40,T43,T60,T61,T400,T400s,T500,W500,W700,
X21,X30,X41,X41T,X60,X60T,X200,X200T,X300,X120e,Z60m,Z61tT410T410sT510T420T420sT520
T430T430sT430UT530T470T470sT470pT570SL500L470L570
Top
kfzhu1229
Senior ThinkPadder
Senior ThinkPadder
Posts: 2507
Joined: Tue Sep 22, 2015 10:59 pm
Location: Toronto, Canada

Re: Sony Vaio LCD flickering

#3 Post by kfzhu1229 » Mon Jun 14, 2021 9:09 pm

You probably wanna try replugging the inverter, its cable as well as the CCFL connector.
Also see if cranking the brightness to the maximum and minimum have any effects.
Moreover, try to observe if any red hue or uneven backlighting occur.
It can be a cold solder joint on the CCFL tube itself, but that probability is usually low, unless the LCD had pest infestation and one bug chomped on the CCFL cable (which happened to a Toshiba that my friend owns)
Dell Lat CP MMX-233 64mb 40gb W2k
600 PII-266 416mb 40gb WXP
T23 PIII 1.13ghz 1gb W7
Precision M4300 X9000 8gb 160gb WUXGA Ultrasharp fp W10
T530i 15.6" i7 16gb fp W10
UXGA:
A30p PIII 1.2 1gb W7 (IDTech)
T43p 2.26 2gb fp W10 (Sharp)
Lat C840 P4-2.5 2gb 60gb W7 (Ultrasharp)
Top
ThinkPad560X
ThinkPadder
ThinkPadder
Posts: 1192
Joined: Fri Mar 13, 2009 2:47 am
Location: New Alexandria, Pennsylvania

Re: Sony Vaio LCD flickering

#4 Post by ThinkPad560X » Mon Jun 14, 2021 9:52 pm

The more I up the light the faster it flickers and lower it flickers slower
IBM: 760XD,770Z,600X,240,560X,560Z,570,380Z,390X,i1200,i1400,
A22m,A22e,A30,G40,R31,R40,R50,R60,R61,R400,R500,
T20,T23,T30,T40,T43,T60,T61,T400,T400s,T500,W500,W700,
X21,X30,X41,X41T,X60,X60T,X200,X200T,X300,X120e,Z60m,Z61tT410T410sT510T420T420sT520
T430T430sT430UT530T470T470sT470pT570SL500L470L570
Top
RealBlackStuff
Admin Emeritus
Admin Emeritus
Posts: 23825
Joined: Mon Sep 18, 2006 5:17 am
Location: Loch Garman, Éire

Re: Sony Vaio LCD flickering

#5 Post by RealBlackStuff » Tue Jun 15, 2021 1:43 am

Either a bad monitor or the wrong power supply.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine.
Top
ThinkPad560X
ThinkPadder
ThinkPadder
Posts: 1192
Joined: Fri Mar 13, 2009 2:47 am
Location: New Alexandria, Pennsylvania

Re: Sony Vaio LCD flickering

#6 Post by ThinkPad560X » Tue Jun 15, 2021 11:20 am

I am waiting for a Sony OEM 18v ac adapter to come in to see if that what it is.
IBM: 760XD,770Z,600X,240,560X,560Z,570,380Z,390X,i1200,i1400,
A22m,A22e,A30,G40,R31,R40,R50,R60,R61,R400,R500,
T20,T23,T30,T40,T43,T60,T61,T400,T400s,T500,W500,W700,
X21,X30,X41,X41T,X60,X60T,X200,X200T,X300,X120e,Z60m,Z61tT410T410sT510T420T420sT520
T430T430sT430UT530T470T470sT470pT570SL500L470L570
Top
ThinkPad560X
ThinkPadder
ThinkPadder
Posts: 1192
Joined: Fri Mar 13, 2009 2:47 am
Location: New Alexandria, Pennsylvania

Re: Sony Vaio LCD flickering

#7 Post by ThinkPad560X » Thu Jun 17, 2021 12:51 pm

Well I got the AC Adapter in today OEM Sony 18v and the screen isn't flickering now. So it had to be the right AC Adapter. The adapter was hard to find and was the only one on ebay at the time. I don't like to buy cheap knock off ac adapter either. But there wasn't any of this plug type as well. So I got lucky finding this.

I guess I can put it back together now.
IBM: 760XD,770Z,600X,240,560X,560Z,570,380Z,390X,i1200,i1400,
A22m,A22e,A30,G40,R31,R40,R50,R60,R61,R400,R500,
T20,T23,T30,T40,T43,T60,T61,T400,T400s,T500,W500,W700,
X21,X30,X41,X41T,X60,X60T,X200,X200T,X300,X120e,Z60m,Z61tT410T410sT510T420T420sT520
T430T430sT430UT530T470T470sT470pT570SL500L470L570
Top
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “Off-Topic Stuff”

Who is online

Users browsing this forum: No registered users and 23 guests