Fairlight-CMI

My monitor excibits the symptom of a rolling invisible field that shrinks 
the picture.

Like this :

NormalNormalNormalNormalNormal
    SmallSmallSmallSmallSmall
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal

NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
    SmallSmallSmallSmallSmall
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal

NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal
    SmallSmallSmallSmallSmall
NormalNormalNormalNormalNormal
NormalNormalNormalNormalNormal

etc etc

It doesn´t do this every time. Well, I think you cans ee it a little bit 
always but sometimes it is worse. Like the picture shrinks 2cm each side.

Any thoughts ?

WT

WT wrote:

> It doesn´t do this every time. Well, I think you cans ee it a little bit 
> always but sometimes it is worse. Like the picture shrinks 2cm each side.
> 
> Any thoughts ?
>

Power supply ripple, probably caused by dried-up electrolytics in the 
power supply.  This used to be common, but I haven't changed a faulty 
electrolytic capacitor for over 15 years - well, except one extremely 
cheap and nasty radio power supply.

Gordon MM0YEQ

Thanks Gordon,

I will look into it a.s.a.p

WT

----- Original Message ----- 

From: "Gordon JC Pearce" <gordon@gjcp.net>
To: <Fairlight-CMI@yahoogroups.com>
Sent: Monday, November 23, 2009 10:41 AM
Subject: Re: [Fairlight-CMI] Another CMI IIx monitor question


> WT wrote:
>
>> It doesn´t do this every time. Well, I think you cans ee it a little bit
>> always but sometimes it is worse. Like the picture shrinks 2cm each side.
>>
>> Any thoughts ?
>>
>
> Power supply ripple, probably caused by dried-up electrolytics in the
> power supply.  This used to be common, but I haven't changed a faulty
> electrolytic capacitor for over 15 years - well, except one extremely
> cheap and nasty radio power supply.
>
> Gordon MM0YEQ
>