Ghost in my TAF

[Matt Adams]

So a week ago the swamp on my taf started randomly activating (you know the bubbling sound effect) but I switched it on yesterday and the bookcase opto's were going mad. In switch test it behaves as the attached video. Anyone have any ideas where to start?

 

[RudeDogg1]

I'm sure I've heard this as a common issue, Google might bring up something

 

[Paul]

The Swamp Maybe? Or the bookcase...?

 

[Monkeyboypaul]

I can't watch the video, stupid Apple devices, but then again how can .wmv files exist in the modern age? Really?

Anyway, it sounds like the CPU is behaving badly perhaps, assuming nothing obvious is triggering the behaviour. Have you tried jiggling the chip and checked the batteries?

 

[stoptap]

Start with the usual stuff. Reseat the ribbon cables and all the connectors at the bottom of the CPU board.

 

[J.C.Rox]

Time to round up the troops and make another video...sighs....will have to put pinside on suicide watch

 

[Moonraker]

Looks like a dodgy wire (or connector) to/from the 7 opto PCB switch assembly. Put the game in switch mode and see if the LED on the board is lit first then wiggle connectors/wires to see if the fault is replecated.

 

[Matt Adams]

wmv files exist in the modern age? Really?

Is that old? I am a man living in the past!

Thanks for all the suggestions guys, I will try them later and report back.

 

[cooldan]

try turning it off and on again.
you're welcome

 

[Matt Adams]

As always Dan, you are the main man, can't think why I didn't ask you first!

 

[Matt Adams]

Went to play TAF tonight completely forgetting about this problem. Re-seated everything with no change so disassembled the bookcase to check the wiring etc but nothing wrong then I remembered about the 7 switch opto board under the playfield. I took it off and cleaned the pins reflowing the solder and it seems this was the culprit, happy days

Thanks for all the suggestions guys

Matt.