Davide

Hi guys, how are you? I bought this Vectrex console that has a defect in the screen do you think it can be repaired? It appears that the image is shifted all the way to the right and is compressed ... This video shows the defect, can someone help me to repair please? https://www.youtube.com/watch?v=jP1SRMHmfZk Thanks so much!

I changed also U2 and U3 but always red screen I tested with my logic probe pin 1-2-3 and 4 of ic rams and i saw that pins 3-4 are low and seems low or open..

I founded that U2 pin4 and U3 pin17 are open...no signal

The are measures with logic probe on Cpu: CPU: 9=PULSE 10=PULSE 11=PULSE 12=PULSE 13=PULSE 14=PULSE 15=PULSE 16=PULSE 17=LOW 18=LOW 19=NO SIGNAL 20=HIGH 22=LOW 23=LOW 24=LOW 25=LOW 26=PULSE 27=LOW 28=LOW 29=LOW 30=LOW 31=LOW 32=LOW 33=LOW

Thanks so much!9 to 20 and 22 to 25 ok?

Where i can see this bit??

Yes...i changed with another cpu taken from another 800xl and nothing changes... I have a logic probe....it's possibile find the damage?

Hi, Rom,MMu and Ram are good...:( Unfortunately i don't have Star Raiders cart...

Davide Topic Starter Combat Commando 1 post Report post #1 Posted 21 hours ago Hi guys,im Davide from Milan, i have an 800Xl Atari...when i try to turn on, i can see only brown screen I try to change some ic from another working 800 but nothing change.... I changed this: U2-OK U3-OK U4-OK U5-OK U18-OK U19-OK U28-OK U30-OK U23-OK U17-OK U29-OK Can someone help me to try damage please? I have digital multimeter, logic probe and mini scope.... Thanks!

Sorry!!i was wrong!

Hi guys,im Davide from Milan, i have an 800Xl Atari...when i try to turn on, i can see only brown screen :( I try to change some ic from another working 800 but nothing change.... I changed this: U2-OK U3-OK U4-OK U5-OK U18-OK U19-OK U28-OK U30-OK U23-OK U17-OK U29-OK Can someone help me to try damage please? I have digital multimeter, logic probe and mini scope.... Thanks!