The Aussie Pinball Arcade

Aussie Pinball Forums => Technical Matters => Pinball Repairs / Problems & Assistance => Topic started by: pinfrog on January 27, 2016, 01:41:39 PM

Title: Williams Flash
Post by: pinfrog on January 27, 2016, 01:41:39 PM

Hi to all, I have just turned on my Flash and noticed the bottom line of displays 1, 2 and the credit display are not working. Any ideas what could be the problem? I am a bit of a noob in the electronic side of things . Thanks in advance .  Cheers Les.

Title: Re: Williams Flash
Post by: Gemini2544 on January 27, 2016, 03:01:44 PM

Before anything turn off the power & remove & carefully reseat the PCB plugs.  Then power on, report back what happened.

Title: Re: Williams Flash
Post by: pinfrog on January 27, 2016, 06:40:21 PM

Reseated all plugs but still missing the bottom line. Cheers Les.

Title: Re: Williams Flash
Post by: Gemini2544 on January 27, 2016, 07:07:23 PM

Can you post a pix of the display so we can see the fault please.

Title: Re: Williams Flash
Post by: Gemini2544 on January 27, 2016, 08:51:03 PM

A mate suggests you check R4 (Resistor #4) on the master display board. Its most probably a charcoal blob.

Title: Re: Williams Flash
Post by: spacejam0 on January 27, 2016, 09:19:00 PM

Quote from: Gemini2544 on January 27, 2016, 08:51:03 PM

A mate suggests you check R4 (Resistor #4) on the master display board. Its most probably a charcoal blob.

yeah I had a similar issue with my Flash display and it turned out to be a resistor on the master display I can't remember which one but it was easy to spot because you could see it was burnt

Title: Re: Williams Flash
Post by: ralph67 on January 30, 2016, 05:56:44 AM

The Resistors are 10K.  Check resistance or R1 to R14 with MM , should read 10K  give or take 10%
 If they need replacing use a 1/2 watt instead of the original 1/4 watt.
Failing that it may be a Chip on the master board .