Gottlieb System 80 players display issue

[Biff]

I bought a 2ndhand display from the US for my Amazing Spiderman, to replace a dimming display. Plugged it in and it does not illuminate at all. I moved it to a different player plug, same issue. Plug old one back in, it works. So not plug or cabling. Anything i can do to diagnose if this is terminal please? I bought from PBR so i don’t suspect any issues on getting dosh back.

Display on left is non working.




thanks.

 

[Moonraker]

Replace the 1uF orange cap on all displays to help protect them.

Leave in the game for an hour or two to see if it revitalises. If not then you can try charging it (always nerve racking).

Gottlieb System 1 - PinWiki

www.pinwiki.com

 

[Biff]

Hi, no i tried that the screen is just dead - no glow at all any where.

Anything i can do to diagnose issue? Anything i can do to check it still has vacuum, direct application of a voltage somewhere to force a segment to glow?

Z1 looks to control the individual segments and Z2 - i think sorts the strobe signals out? If one was dead would it result in a dead display or garbled stuff?

Cheers

JB

 

[AlanJ]

it looks gassed out to me:

The simplest and easiest problem to identify is display glass failure. All of the 6 digit displays used by Gottlieb® System 1 games will have a black "blotch", for lack of a better term, in the upper left and lower right corner of the glass. The 4-digit status display typically has only one black blotch. The evidence of a black blotch or blotches is good.


Display with Broken Nipple on Back

However, if there is a muted white blotch visible at the corners of the display, it means the display's "vacuum" has been compromised, either due to a cracked glass or broken nipple. If this is the case, the display glass can not be repaired and is useless.

 

[Moonraker]

Alan is correct, the display is duff, lost vacuum. I missed that viewing it on my phone.

Still replace the 1uF caps on all remaining displays to help protect them and save you getting through fuses.

 

[Biff]

Thanks bot, i did notice it was clear in corners compared to others. Wrongly thought it was less worn…