Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 533
Default Sharp LL- T17A4-B lcd Monitor

Bought from the 'E' place for cheap. Reported symptom: video comes on
and fades out. Figured it was high ESR smps caps.

Actual symptom: backlight comes on, image consist of random horizontal
lines, which eventually--after some intermittent vertical
scrolling--settle into a very nice image. Takes like two minutes to
warm up. Shutting the monitor down for some unknown time starts the
process all over again. Continuous viewing yields a stable image with
good resolution, brightness and linearity. Shutting down for short
periods is not problematic.

There is only one HV (100 @ 400v) cap in the ps. ESR is .46, which I
assume is within tolerance. Other caps in the ps also seem fine.

This presents so like a classic cap issue (needs to warm up), that I'm
going to next pull the video board and check caps there...possibly get
some freeze spray and see if I can duplicate symptoms that way.

Reality check: any problem with the above procedure, or experience with
this particular monitor? Any suggestions as to where to go if the above
doesn't produce a dx and fix?

Thanks as always,

jak
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Too sharp or fack sharp (waterstones) MrM Woodworking 5 November 21st 06 01:19 PM
3DZ13 (SHARP) and 3TZ53 (SHARP) yt87788248 Electronics Repair 1 October 17th 05 09:03 AM
help needed: Panasonic monitor Panasync E70i 17" monitor Aslaner Electronics Repair 1 October 10th 04 06:16 PM
Sharp Image Monitor repair issue Jason F Electronics Repair 4 October 2nd 04 05:38 PM
IIYAMA Monitor model : S102GT, and DELL P1110, are they the same monitor? private person Electronics Repair 0 February 24th 04 08:57 PM


All times are GMT +1. The time now is 07:00 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"