Photo: pinballphotos
  1. » Forum
  2. » Tech
  3. » Tech: Alpha-numeric
  4. » Pop Bumper locked-up
(Topic ID: 66634)

Pop Bumper locked-up

By Hi-Fi

10 years ago



Topic Stats

  • 7 posts
  • 3 Pinsiders participating
  • Latest reply 10 years ago by terryb
  • Topic is favorited by 1 Pinsider

You

Linked Games

  • Taxi Williams, 1988
0
0
0
#1 10 years ago
OP
 
RJA

Hi-Fi

Pinside member

US Milwaukee, WI

11y 63,550 723 10 6

One of the pop bumpers on my Taxi machine decided to lock up and cooked my coil. The plunger is fused to the nylon sleeve now. I can get replacement parts no problem but what could have caused this to happen?

0
0
0
#2 10 years ago
 
BDR

vectordreams

Pinside member

US Colorado Springs, CO

10y 41,950 113 4

Transistor locked on for some reason. Make sure to replace main driver and the pre-driver as well. Which pop bumper locked?

0
0
0
#3 10 years ago
OP
 
RJA

Hi-Fi

Pinside member

US Milwaukee, WI

11y 63,550 723 10 6

The right pop bumper.

0
0
0
#4 10 years ago
 
TAB

terryb

Inactive member

US Banning, CA

11y 90,150 4,795 14

First make sure the pop bumer switch is working properly. If it is then test the driver and pre-driver transistors in diode/continuity mode and go from there.

0
0
0
#5 10 years ago
 
BDR

vectordreams

Pinside member

US Colorado Springs, CO

10y 41,950 113 4

Check Q73 and if you do replace it and it still locks on you will need a logic probe to test the U45 chip that is a 7402.

0
0
0
#6 10 years ago
OP
 
RJA

Hi-Fi

Pinside member

US Milwaukee, WI

11y 63,550 723 10 6

Oh boy, I hope it's just the switch. You guys are starting to lose me, lol.

I do have the manual, I'm going to have to do some research.

0
0
0
#7 10 years ago
 
TAB

terryb

Inactive member

US Banning, CA

11y 90,150 4,795 14

There are plenty of people that can help you out, so don't worry, but I would suggest troubleshooting the problem rather than just replacing components.

Promoted items from Pinside Marketplace and Pinside Shops!
From: $ 3.50
Playfield - Other
Stoplight Posts - for High Speed, Getaway, & more
Rocket City Pinball
 
$ 10.00
Playfield - Protection
Taxi Slingshot and Center Drop Plastic Protectors
UpKick Pinball
 
Wanted
Machine - Wanted
Wanted: Taxi
Middletown, OH
WeirPinball
4,495
Machine - For Sale
Taxi
West Chicago, IL
GAP
$ 18.95
Eproms
ROM TAXI -CPU-MARILYN
Pinballrom
 
$ 109.00
Cabinet Parts
Williams - Taxi Topper New 03-8184 - includes decal set
Starcade Amusement
 
4,000 (OBO)
Machine - For Sale
Taxi
Bay Shore, NY
PinBrokers_
$ 899.00
Flipper Parts
TAXI red hair version playfield
Mircoplayfields
 
$ 17.00
Playfield - Decals
TAXI Black Chrome Cap set of 3
Metal-Mods
 
$ 36.95
Eproms
ROM TAXI -SOUND
Pinballrom
 
$ 899.00
Flipper Parts
TAXI blond hair version playfield
Mircoplayfields
 
$ 27.00
Electronics
Williams Pinball System 11B Fuse Kit - 21 Fuses
Yorktown Arcade Supply
 
$ 99.00
Cabinet Parts
Williams Taxi Translite - NOS
Gizmorama Pinball
 
$ 12.50
Lighting - Led
10 Warm White SteadyStrips for Williams Sys 3 - 11
RoyGBev Pinball
 
$ 18.95
Eproms
ROM TAXI -CPU-LOLA
Pinballrom
 
Great pinball charity
Bringing the Joy of Pinball to American Children’s Hospitals
Project Pinball

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/pop-bumper-locked-up 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.