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VECTREX WITH DESPERATION

Dave, problem solved!! I changed DAC ic301 with a new one and i solved the problem, a guy told me this in a facebook group dedicated to vectrex!
 
We would have started at the DAC after we had checked the power supply rails...

The T503 IN- looks pretty poor anyhow - when compared to T503 IN+ so I would still look at why. There may still be a power supply fault lurking.

This is the problem with jumping to swapping components. You have not followed a logical diagnostic process to arrive at that conclusion - so do not learn how to find faults. You just learn to ask others and swap parts.

When your skills improve, then you will learn which components fail more often for yourself, and then you can take short cuts.

Dave
 
daver2 said:
The T503 IN- looks pretty poor anyhow - when compared to T503 IN+ so I would still look at why. There may still be a power supply fault lurking.
Click to expand...
i am desperate for this....can i check now with new DAC maybe?
 
I have another problem, if i insert the diagnostic cart and i turn on the console, i see the first screen but after some seconds, the screen came black...if i run the console with integrated minestorm, i have not problem..
 
now I inserted the joy into the other port and it seems to work... but I think that some things need to be adjusted using the cartridge..
 
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