Hey guys, I brought this Crossbow home last night. It was getting checksum errors on the screen when he showed it to me. So this morning I tried it and was getting a variety of different responses when I powered it on. Sometimes ROM CRC errors, sometimes rug patters or misc. garbage on the screen.
I checked the +5 (someone put in a switcher) and it was good. So I pulled the boards and removed and reseated all 8000 socketed rom chips. They looked really clean. I went and tried it again and now it very consistently passes the Ram and rom checks but....
Now it give me an "Audio power down" error and "please press start" but won't do anything when I press start. It just sits there at the test screen.
Interestingly, it would go past the start screen before when it failed the crc checks and it wasn't getting the "Audio power down" message then.
So it appears reseating the roms helped...but....I have introduced another problem.
Any Exidy experts out there want to chime in? Thanks!
I checked the +5 (someone put in a switcher) and it was good. So I pulled the boards and removed and reseated all 8000 socketed rom chips. They looked really clean. I went and tried it again and now it very consistently passes the Ram and rom checks but....
Now it give me an "Audio power down" error and "please press start" but won't do anything when I press start. It just sits there at the test screen.
Interestingly, it would go past the start screen before when it failed the crc checks and it wasn't getting the "Audio power down" message then.
So it appears reseating the roms helped...but....I have introduced another problem.
Any Exidy experts out there want to chime in? Thanks!

