Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: piero.a on September 07, 2014, 09:51:13 AM

Title: Quasar Zaccaria
Post by: piero.a on September 07, 2014, 09:51:13 AM

I'm trying to repair a Quasar Zaccaria pcb.

I applied my fluke 9010th with adapter for 2650 and I did the bust test.
The fluke reports the data bit 1 tied high. Looking at the schematic I see that the 74LS244 position 3G could be responsible and not knowing how to work around this problem I removed it.
As a solution I do not absolutely love it and I would like to understand how to test the bus without removing it.
The same problem I had also met in Astro Wars. Someone would help me to understand?

Title: Re: Quasar Zaccaria
Post by: Etienne MacGyver on September 07, 2014, 06:28:20 PM

Although i think itsvery interesting, its way beyond my knowledge.

Title: Re: Quasar Zaccaria
Post by: lesoleil70 on September 07, 2014, 09:25:38 PM

Hi - can you post a picture of the sound board, it would really help me out on another thread.

Title: Re: Quasar Zaccaria
Post by: piero.a on November 26, 2014, 01:49:17 PM

Excuse me but I didn't read the message until today... I'm just restoring one because I didn't own it until some days ago. Still Interstested?