Question about Sony CPD G420 19" CRT Monitor

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Standby problem My sony monitor seems to have some problems coming out of standby. When in standby the amber led is lit. It changes to green attempting to come out of standby but then the amber led comes on again but this time blinking. The only way I can get the thing going again is to shut down the pc and pull the power plug and video cable on the monitor. Then reconnect the power and video cable and restart the pc. This fault does not happen all the time but is annoying when it does.

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Re: Standby problem HMDA400 CRT Sony doing the same need to discharge the CRT of static, then open the case and vacume the boards, heat sinks and every thing soldered down, strap grounds and the glass tube CRT.

Then run the self diognostic from the manual ..its simple and will tell you if the problem is major...usually it is a pwr the pwr strip outlet may be shorting or pulsing erratical out put....bad strip......if the self diognostic shows the monitor is thing to do is replace the main monitor PC board to avoid testing other componants with speciality equpment you don't have! Last resort replace the CRT...the most expensive piece of the the picture tube it self...

try a good known monitor on your system to be sure you don't have a software, or CPU problem or pwr glitch.....know this ,a black screen with no raster(lines, visuals) could be a sign of a faulty FBT(fly back transformer) happens with CRT doesn't it...and you would be advised to" wear rubber gloves" to replace the FBT yourself....because of the dangerous voltage stored in the damn things.....its the current not the voltage that is deadly.....two hands on any circuit is not hand at a time when taking parts out and putting them in.....get rid of rings watches and other conductive bling on your wrists and hands! will thank you me for that! good luck!

Posted on Jul 16, 2009

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Hi Sammy7!!

I have such iiyama AS4636D monitor. In this day purchase.
I have such problem with you.
My solution:
Desktop pc and lcd power off (230VAC or 110VAC)
Power on lcd, after early desktop pc.
This moment, when running the pc booting, press and hold you the " + " button.
In this moment come in one blue screen. May be running on the sreen short message: check or select input mode: VGA DVI 1 2 . Select your correct cable connection type.

Have a nice day! and happy new year!

Lajos from Hungary

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It sounds like this one needs component-level troubleshooting, probably in the power supply section.

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