Question about LG Computers & Internet
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Posted on Jan 02, 2017
remove EHT wire and clean that area with spirit or isopropal alchohal. dry it . if neccessary replace the EHT cap. apply JELLY (like vasiline)at EHT cap and at CRT where EHT placed. if possible spray the ecrilic.dry it and it will never gives trouble like this.
Posted on Jul 03, 2007
Your vertical deflector circuit is going out. This is really not economical to repair, the chip alone is $12-15 plus if you have any other parts in the circuit going out plus labor. You can pickup 17" CRT monitors for less than $15 from goodwill or craigslist.
Sorry to say but I think its time to retire your 753s
Posted on Jul 14, 2009
The normal crt monitor have a demo display when you unplug the vga cable to PC like this image below..
If the crt monitor green LED light steady and heater beam have light, the horinzontal and High Voltage supplied to tube is completely good. If you encountered this problem just focus on video section of crt monitor. But before you start... find the flyback transformer behind this they have two controls screen & focus. After you found it plugin the monitor use plastic precision or small screw philip driver for safety to high voltage at horizontal area choose screen control rotate it to clockwise direction follow this....
If the display responses or from dim to lighter 100% you have a problem to ABL find this at the bottom of horinzontal section near at flyback transformer pins trace the line of ABL for dried solder, open resistor if nothing happen find the Video IC at chroma section and replace it. follow this...
For LG & Redfox you found LM1269NA Visit this site for seaching semiconductor matches www.alldatasheet.com Good luck.
Check this site for searching semiconductor
Posted on Aug 25, 2009
The CRT has screen adjustments, there is a screen adjustment button on the monitor that will allow you to adjust the width of the image as well as the height etc.
Posted on Jan 21, 2010
Tips for a great answer:
Jul 18, 2016 | LG Studioworks 700S 17" CRT Monitor
May 23, 2010 | LG Studioworks 700S 17" CRT Monitor
Mar 19, 2009 | LG Studioworks 700S 17" CRT Monitor
first thing it is not necessary to replace eht when there is no raster.
Oct 17, 2007 | LG Studioworks 700S 17" CRT Monitor
Dec 15, 2006 | Samsung SyncMaster 793MB 17" CRT Monitor
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