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Philips mg2.1e chassis low brightness , no blue raster

 
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xlouk



Joined: 26 May 2004
Posts: 1
PostPosted: Tue Jun 03, 2008 10:40 am    Post subject: Philips mg2.1e chassis low brightness , no blue raster Reply with quote
I have a Philips mg2.1e chassis which has low brightness and it hasn't got blue raster.

Please can anybody help me.
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torbjorn



Joined: 07 Jun 2007
Posts: 370
Location: Sweden
PostPosted: Tue Jun 03, 2008 12:10 pm    Post subject: Reply with quote
Check that all three CRT heaters are glowing normally.
Also, check the drive to the CRT cathodes by a scope. If the drive signals are normal (both p-p value and dc level, no black clipping etc), then the CRT is probably faulty. Of course, you could try turning up the screen voltage to see if you get better brightness.
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PostPosted: Fri Jun 06, 2008 7:16 am    Post subject: Reply with quote
torbjorn wrote:
Check that all three CRT heaters are glowing normally.
Also, check the drive to the CRT cathodes by a scope. If the drive signals are normal (both p-p value and dc level, no black clipping etc), then the CRT is probably faulty. Of course, you could try turning up the screen voltage to see if you get better brightness.

I Checked all this below and everything works ok.
Have you got any other idea.

Thanks.
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