Need help to trouble shoot a light problem

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Laterreur
MAACA Collaborator
Posts: 85
Joined: Sun Feb 26, 2017 10:59 pm
Location: Saguenay city, Quebec

Need help to trouble shoot a light problem

Postby Laterreur » Fri Jun 09, 2017 7:47 pm

Hi guys, I have the same problem on my fish tale and Hurricane. I have a complete row of lights dead (see picture). I checked and the voltage is 10 times higher on the line that have a problem (on the Hurricane).

What should be the next step? Is it a broken transistor on the board? What is the list of the root causes for that kind of bug?

Thanks!
Attachments
IMG_0423.JPG
IMG_0422.JPG
My games : Cyclone, Jokerz, Fish Tale, Hurricane, Getaway
Open to trade : Jokerz, Cyclone
Wanted games : Jack Bot, White Water, DMD Williams/Bally

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Mrhide
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Posts: 10880
Joined: Fri Nov 20, 2009 6:59 pm
Location: Laval

Re: Need help to trouble shoot a light problem

Postby Mrhide » Fri Jun 09, 2017 8:11 pm

Lights controlled by the CPU (not the General Illumination lights), are controlled in a
similar fashion as a switch matrix. That is, there are eight lamp rows, and eight lamp
columns. This gives a total of 64 CPU controllable lamps. These lamps are powered
by +18 volts DC. This voltage is strobed (turned on and off very quickly), and hence
the final power to the lamps is about 6 volts.
The lamp columns are controlled by TIP107 transistors that switch the +18 volts on
and off many times within a second. The lamp rows are controlled by TIP102
transistors that switch the ground on and off. Because the TIP107's source the
current (instead of sinking the ground like a TIP102), lamp column TIP107 transistors
go bad more often than TIP102 lamp row transistors.
LF: EGRET 2 or 3 + Shoot 'em up PCB. Let me know what you have!
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Laterreur
MAACA Collaborator
Posts: 85
Joined: Sun Feb 26, 2017 10:59 pm
Location: Saguenay city, Quebec

Re: Need help to trouble shoot a light problem

Postby Laterreur » Fri Jun 09, 2017 9:24 pm

Thanks for the help. Do you know where I can find good "Do it yourself" videos that explain all this with real example?
My games : Cyclone, Jokerz, Fish Tale, Hurricane, Getaway
Open to trade : Jokerz, Cyclone
Wanted games : Jack Bot, White Water, DMD Williams/Bally

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Mrhide
MAACA Dark Lord
Posts: 10880
Joined: Fri Nov 20, 2009 6:59 pm
Location: Laval

Re: Need help to trouble shoot a light problem

Postby Mrhide » Sat Jun 10, 2017 8:21 am

oui, ici :
http://www.pinrepair.com/top/

sont toutes bons :)

... et shoot moi ton courriel .... ma t'envoyer de quoi itou
LF: EGRET 2 or 3 + Shoot 'em up PCB. Let me know what you have!
Image


Laterreur
MAACA Collaborator
Posts: 85
Joined: Sun Feb 26, 2017 10:59 pm
Location: Saguenay city, Quebec

Re: Need help to trouble shoot a light problem

Postby Laterreur » Tue Jun 13, 2017 11:21 am

Merci!
My games : Cyclone, Jokerz, Fish Tale, Hurricane, Getaway
Open to trade : Jokerz, Cyclone
Wanted games : Jack Bot, White Water, DMD Williams/Bally

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4eyes
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Posts: 180
Joined: Fri Sep 17, 2010 8:40 am
Location: Ottawa, On

Re: Need help to trouble shoot a light problem

Postby 4eyes » Tue Jun 13, 2017 2:46 pm

I think that for your Fish Tales at least you'll likely find a bad / burnt connection on j120 / J121 on the driver board. You can follow the colour of wire to the connector from the backbox insert lamps.
AFM, STTNG, TZ, TOM, FH, WW, TAF, JP, DH, EBD

Laterreur
MAACA Collaborator
Posts: 85
Joined: Sun Feb 26, 2017 10:59 pm
Location: Saguenay city, Quebec

Re: Need help to trouble shoot a light problem

Postby Laterreur » Sun Jul 16, 2017 7:17 pm

It was a burned connector for the fish tale
My games : Cyclone, Jokerz, Fish Tale, Hurricane, Getaway
Open to trade : Jokerz, Cyclone
Wanted games : Jack Bot, White Water, DMD Williams/Bally



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