Question about IBM ThinkVision L170 17" LCD Monitor

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My IBM ThinkVision monitor flickers the correct display then blacks out. The light goes green a moment, then goes amber with the blackout. I think it may be stuck in the Energy Star/Power Saver mode. Is there any way to override this or fix it via hardware mod? (Or fix it in general). It flickers on and off once per second or so.

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  • Harry Skelton Jul 31, 2010

    I've done the Flashlight-Test and saw nothing, then again, I have LED flashlights that would leave a halo on the screen. But in general tests I saw no image. It seems that it is going into power saving mode then comes back out of it. Like a false signal or something. A cap could cause that I suppose. Just have to figure what cap. Wish I could simply bypass the power saving mode (hardware wise) and see if that corrects things.

  • Harry Skelton Aug 02, 2010

    I have tested it with several PC's. The problem remains. The image is true and clear, when it appears, but is quickly blanked when it shifts power modes. The LED is GREEN for a moment then switches to AMBER, as if in Power Saving mode. Then switches back again, ad nauseaum.

    So far the only solutions I have read is a bad CAP or the chip that controls power saver mode is fried. If I knew which lead to cut I would try that. So far no luck on leads on this, or service manuals with schematics.



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Skeltonh, Have you connected your L170 to a different "known-good" PC that has ALL power-save and screen saver modes disabled? Have you connected an old monitor to your PC to see if it will act same way as the L170? 12fixlouie

Posted on Aug 02, 2010

  • Louis Ebert Aug 02, 2010

    skeltonh, Do some reading in my fixya profile (pages 32 and up) and those of "budmrtn" and "buddymc" and follow links you will find there. You will also need to look at the smps/inverter board with aid of large magnifying glass to inspect it for "thermally intermittant" "thermally fractured" solder joints that have over time caused this condition (symptom). What is "date of manufacture" of unit. Could be "time to retire" unit if 5 to 8 years old??? 12fixlouie



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It is an easy repair, though if your not confident with electronics then get your local TV man to have a look.

Your eBay link isn't working by the way.

Hope that helps.

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