(Topic ID: 240420)

Alien Poker no boot. (No LED flash)

By frisbez

4 years ago



Topic Stats

  • 1 post
  • 1 Pinsider participating
  • No one calls this topic a favorite

You

Linked Games

You're currently viewing posts by Pinsider frisbez.
Click here to go back to viewing the entire thread.

#1 4 years ago

Hi all, trying to get an Alien Poker going that I bought as a non-working project. I get no flashes on the LEDs on power-up. They're turning on and staying on.

I just rebuilt the power supply and replaced the 40 pin interconnect and have good voltage readings everywhere I have looked.

I am aware that the problem could be a number of things. I just ordered a ROM burner and some EPROMs to start testing, but until then I was going through Mark's System 6 guide.

One thing his guide says is that the Crystal Oscillator should output approximately 3 volts to pins 38 and 39 on the CPU. When testing mine I am getting approx 1.4 volts. Does anyone know how accurate this is? Does this mean the Oscillator is definitely bad or should I wait to test with the test rooms before replacing it. Every other voltage I have tested is right in spec.

Promoted items from the Pinside Marketplace
$ 100.00
Cabinet - Shooter Rods
Super Skill Shot Shop
Shooter rods
$ 12.50
Lighting - Led
RoyGBev Pinball
Led
From: $ 1.25
Playfield - Other
Rocket City Pinball
Other
$ 42.95
Eproms
Pinballrom
Eproms
3,700 (Firm)
Machine - For Sale
Evansville, IN
$ 44.99
Cabinet - Shooter Rods
Pinball Shark
Shooter rods
$ 27.95
Eproms
Pinballrom
Eproms
From: $ 9.00
Boards
KAHR.US Circuits
Boards
From: $ 11.00
Playfields
Troxel Repair
Playfields
From: $ 90.00
Tools
Pincoder Store
Tools
From: $ 8.00
Cabinet - Other
NO GOUGE PINBALL™
Other
From: $ 1.00
Playfield - Other
Rocket City Pinball
Other

You're currently viewing posts by Pinsider frisbez.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


This page was printed from https://pinside.com/pinball/forum/topic/alien-poker-no-boot-no-led-flash?tu=frisbez and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.