Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: Digimon on May 25, 2013, 05:03:22 PM

Title: Pole Position Monitor FREQ Problem
Post by: Digimon on May 25, 2013, 05:03:22 PM

Hi Guys,

I have a problem with my Pole Position Monitor.  Electrohome / Vicotr Chassis G07.

all my PCBs have a stable screen (even with defect PCB;-)

(http://www.proe-wildfire.de/Zac/Machines/PolePosition/small/002_small.jpg)

but my working PCB gives a running picture like this. looks like a 60hz screen an a 50Hz Monitor
(http://www.proe-wildfire.de/Zac/Machines/PolePosition/small/001_small.jpg)

(http://www.proe-wildfire.de/Zac/Machines/PolePosition/small/003_small.jpg)

I am not able to adjust the screen, but I found this in a manual:

(http://www.proe-wildfire.de/Zac/Machines/PolePosition/1.jpg)
My "Jumpers" are both the left position. Anyone knows if it is a solution to switch them to the right? I found nothing in den manual about positioning;-(

(http://www.proe-wildfire.de/Zac/Machines/PolePosition/2.jpg)

Title: Re: Pole Position Monitor FREQ Problem
Post by: PaulSwan on May 25, 2013, 05:30:35 PM

Try adjusting the horz. frequency. The tabs only move the picture position. It's unusual to have two identical boards where one syncs and the other doesn't. It's possible your working board has a fault in the sync?
Paul.

Title: Re: Pole Position Monitor FREQ Problem
Post by: baritonomarchetto on May 25, 2013, 05:46:42 PM

Try toying with the HOR. FREQ potentiometer (it's in the manual piece you posted) and eventually with the VER. FREQ.

Title: Re: Pole Position Monitor FREQ Problem
Post by: Digimon on May 26, 2013, 08:01:42 PM

Got it:)

There was only a sync problem on the PCB.

The edge connector was the problem. Now I grab the sync direct from the PCB and evrything is fine;)

Title: Re: Pole Position Monitor FREQ Problem
Post by: level42 on May 26, 2013, 08:09:59 PM

Time to replace your edge connector.

Title: Re: Pole Position Monitor FREQ Problem
Post by: Digimon on May 26, 2013, 08:17:24 PM

Yepp,

The smallest things have the biggest effects:)

Title: Re: Pole Position Monitor FREQ Problem
Post by: Etienne MacGyver on May 26, 2013, 08:29:20 PM

Especially on a PP  ;)

http://www.youtube.com/watch?v=9_tPYWLJr_s

Title: Re: Pole Position Monitor FREQ Problem
Post by: Digimon on May 27, 2013, 09:18:21 PM

prepare to qualify;-)


yeah, my first game after 20 or more years may begin;-)

thanks to Atari-Toobin for the PCB!!!!

(http://www.proe-wildfire.de/Zac/Machines/PolePosition/small/WP_20130527_004_small.jpg)