strange video output

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strange video output
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Image icon appleIIe-PAL.jpg176.57 KB

Hi guys,

i have powered on my Apple IIe PAL and i got the image that you can see in the attached pic.

have you any idea about the damaged part and this issue?

 

thank you in advance

 

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Most likely: RAM, CD ROM, EF

Most likely: RAM, CD ROM, EF ROM, 6502. 

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thank you very much, i will

thank you very much, i will check and i will let you know.

 

ciao

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zappx wrote:thank you very
zappx wrote:

thank you very much, i will check and i will let you know.

 

ciao

 

If youhave spares, swap the CD ROM first, try it. 

If that fails,  swap the EF ROM and try it.

If that fails, swap the CPU (6502A or 65C02, if not enhanced, or enhanced, respectively).

If that fails, time for a RAM check. 

 

This sort of thing can also be caused by a bad PSU, but I would eliminate these issues first. Also, the Video ROM could be suspect, but the Apple service procedure is what I posted above. 

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Deleted. Reason: Harassment - Tom

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Thank you, that is not my

Thank you, that is not my name. Please try to find some sort of other way to spend your time, such as assisting the OP. 

 

The original procedure for this issue is to check the CD ROM first. Given that these are common components that many users have as duplicates, the basic test to verify that the part has a fault, it is a five minute diagnostic. Each step in the above flow is designed to eliminate a potential issue, starting with the easiest to validate. 

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