FunHouse
Williams, 1990Need some advice on my next steps.
When I turn the game on a SB fuse immediately blows and the rear GI does not come on. I am able to power the section with an alternative power source so I don't think I have a shorting issue. if J120 and J121 are unplugged the fuse doesn't blow. I checked continuity on the power board and everything seems okay.
Is it possible Q14 is at fault? Not sure where to turn next.
Quoted from schwism:Need some advice on my next steps.
When I turn the game on a SB fuse immediately blows and the rear GI does not come on. I am able to power the section with an alternative power source so I don't think I have a shorting issue. if J120 and J121 are unplugged the fuse doesn't blow. I checked continuity on the power board and everything seems okay.
Is it possible Q14 is at fault? Not sure where to turn next.
do you have leds in the game? could be a bad led. take them all out in that string and see if fuse blows. then add them back one by one. should only be a handful or so of them.
Quoted from Lermods:do you have leds in the game? could be a bad led. take them all out in that string and see if fuse blows. then add them back one by one. should only be a handful or so of them.
There are 14 in all. I took out all the bulbs and put in three known good bulbs. Also, I was able to get the whole string to work off a 9v battery connected to the leads on the J121 plug.
If the fuse doesn’t blow with j120 and 121 unplugged, that should mean it’s not a board issue and you have a short on the playfield somewhere. Are you sure every socket lit up off the battery? Which fuse is blowing? I am assuming it’s f106,7,8,9 or 10?
When you took the bulbs out with j120 and 121 plugged in, did the fuse still blow?
There is a common short on FH -
With the playfield up in service position the short is near the bottom. It is two lamp sockets that come very near one of the posts that is held in with a lock nut. If one of the sockets wires is bent just so, it will short out against that post's nut.
I can get you a picture later, but it is near the center and down in bottom of cabinet. So back by Rudy.
I know this because it kept shorting after I did a playfield swap. I ended up soaking the nut with a hot glue gun to avoid shorts.
Quoted from Lermods:If the fuse doesn’t blow with j120 and 121 unplugged, that should mean it’s not a board issue and you have a short on the playfield somewhere. Are you sure every socket lit up off the battery? Which fuse is blowing? I am assuming it’s f106,7,8,9 or 10?
When you took the bulbs out with j120 and 121 plugged in, did the fuse still blow?
I filled every socket. F108 blows. This is the yellow string.
Quoted from Jrotten:Also connectors may be dis colored not making a good connection. I used very light sandpaper on the male pins with alcohol. Your situation could be different. What Eli said is something to also look into. J
Here are the connectors. Look pretty good.
A9D69F3E-933B-4BD0-9432-80D44753FB79 (resized).jpegC5E831E9-716F-44FC-AE35-2E06A0CF2845 (resized).jpegQuoted from Elicash:There is a common short on FH -
With the playfield up in service position the short is near the bottom. It is two lamp sockets that come very near one of the posts that is held in with a lock nut. If one of the sockets wires is bent just so, it will short out against that post's nut.
I can get you a picture later, but it is near the center and down in bottom of cabinet. So back by Rudy.
I know this because it kept shorting after I did a playfield swap. I ended up soaking the nut with a hot glue gun to avoid shorts.
Think I know the place. I’ll check it when I get a chance. I do get everything to light with a battery though.
Quoted from schwism:Here are the connectors. Look pretty good.[quoted image][quoted image]
You need to look at the small exposed part of the pins (side that faces up once plugged in at J120/J121) in each of the 3 connector housings at J115, J120 and J121.
Also, you may have to remove the related fuse (within the 5 at the bottom left of the board) and test it/them with a meter.
Wanna join the discussion? Please sign in to reply to this topic.
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/funhouse-gi-issue?hl=jrotten 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.
Edmond, OK