Mac Performa 5300 Losing Red.

[PeteWeedon]

I have a Performa 5300 whose display has started to lose red. It usually seems to be OK when I switch on but the red goes after a minute or two.

Please has anyone else seen this problem and solved it? I assume that a similar problem could arise with either of the other two colour channels.

Can anyone please tell me where I can find schematics of the video/analogue circuitry of the 5300?



Best regards,

Pete W.

If you can keep your head when all about you are losing theirs - you haven't seen the latest Change Note!

 

[jimbopalmer]

http://docs.info.apple.com/article.html?artnum=19999

talks about one reason it may happen

I tried to remain child-like, all I acheived was childish.

 

[PeteWeedon]

Jimbopalmer:

Hi,

Thanks for your suggestion. I tried the link you gave but it didn't mention my problem. I also followed the onward links that looked relevant but either they pointed to pages that weren't found or else they again didn't address my problem.

Did you mean me to search the entire Apple site?

Am I missing something?



Best regards,

Pete W.

If you can keep your head when all about you are losing theirs - you haven't seen the latest Change Note!

 

[jimbopalmer]

Rats for me it leads to a page with a tester program to find defective video on mac 5x00 computers. They put an extended warranty to cover that problem, now expired.

Sorry if it did not lead there for you

I tried to remain child-like, all I acheived was childish.

 

[lesgray]

Also a possibility is that some of the capacitors in the monitor are no longer any good. Any decent monitor repair shop can identify these kinds of problems and can repair them.

Les

Les Gray

http://www.creartec.com

 

[PeteWeedon]

Les:

Thanks for your post.

As you know, the 5300 is an 'all-in-one'.

I'm an electronics engineer (retired) and would prefer to do my own repairs but I posted the original question in the hope that someone had fixed the same fault and could save me at least some time troubleshooting that close to the 'killer-volts'!

And oh, how a schematic or two would be useful!

Thanks again.



Best regards,

Pete W.

If you can keep your head when all about you are losing theirs - you haven't seen the latest Change Note!