Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: Belike on February 28, 2011, 04:24:02 PM

Title: Zaccaria Scorpion pcbs
Post by: Belike on February 28, 2011, 04:24:02 PM
I received 3 sets of Scorpion pcbs yesterday, unfortunately non workings.(1 complete mainboard not on the pic.)
(https://lh4.googleusercontent.com/_-UA8BV99Des/TWu7KbPTfuI/AAAAAAAACcE/oc9WPPZuFSE/s800/Scorpion%20issue%20005.jpg)

(https://lh4.googleusercontent.com/_-UA8BV99Des/TWu7KMwkykI/AAAAAAAACcA/WseJ1tRKKRs/s800/Scorpion%20issue%20006.jpg)

I tested all of them and tried to swap the chips among the boards, but always the similar result
(https://lh6.googleusercontent.com/_-UA8BV99Des/TWu7J0HbcxI/AAAAAAAACb4/rQ_T6cMeloA/s800/Scorpion%20issue%20002.jpg)

I placed the game roms into a Scramble mainboard, but still not working
(https://lh5.googleusercontent.com/_-UA8BV99Des/TWu7JbBMiPI/AAAAAAAACb0/7vJrjCQmNKs/s800/Scorpion%20issue%20001.jpg)

Is there anybody who wants to give it a try to make at least one working from the 3?(3 working could be the best of course). ;D
Title: Re: Zaccaria Scorpion pcbs
Post by: Etienne MacGyver on February 28, 2011, 04:28:10 PM
Sounds to me a job for our famous Robin Holland (https://www.dragonslairfans.com/smfor/index.php?action=profile;u=1115)  ;)
Title: Re: Zaccaria Scorpion pcbs
Post by: Robinholland on February 28, 2011, 05:55:11 PM
Sent me the 3 sets and i sent 1 or 2 working sets back( if possible , i see missing components) (the last set is for me)  ;D
What numbers have the missing chips ?
Title: Re: Zaccaria Scorpion pcbs
Post by: Belike on February 28, 2011, 07:25:45 PM
Quote from: Robinholland on February 28, 2011, 05:55:11 PM
Sent me the 3 sets and i sent 1 or 2 working sets back( if possible , i see missing components) (the last set is for me)  ;D
What numbers have the missing chips ?
Deal! ;)
Missing chips:
1.(2 missing):Z8400AB1
                  Z80ACPU
                  88147
2.(1 missing):E1Z298-149
                  D8255AC-5
3.(1 missing):Z8400AB1
                  Z80ACPU
                  88151 on the other board in the same place it is 88147
I have tons of non-working and garbage pcbs, I will check them tomorrow, maybe I will find some replacement.

Prepare for my PM. ;) ;D
Title: Re: Zaccaria Scorpion pcbs
Post by: PaulSwan on March 01, 2011, 05:26:58 AM
Bela, did you try and adjust the sync pots on your monitor to see if you could sync the picture? Looks like there might be something there, just slightly off sync.
Title: Re: Zaccaria Scorpion pcbs
Post by: Belike on March 01, 2011, 08:18:27 AM
Quote from: PaulSwan on March 01, 2011, 05:26:58 AM
Bela, did you try and adjust the sync pots on your monitor to see if you could sync the picture? Looks like there might be something there, just slightly off sync.

Yes, I tried all adjusting possibilities on the monitor and rom swapping among the pcbs, but I was unable to get them work.
I tested the cab with an Amidar pcb then and it was fine.