The Aussie Pinball Arcade

Aussie Pinball Forums => Technical Matters => Pinball Repairs / Problems & Assistance => Topic started by: vanhos on September 08, 2014, 08:06:52 PM

Title: Bally coil transistor
Post by: vanhos on September 08, 2014, 08:06:52 PM

Hi I'm looking for an equivalent transistor for my  drop target coil se9302.

Is it a tip102. If it is, does anybody no were I can get one from online.  

Title: Re: Bally coil transistor
Post by: pinnies4me on September 08, 2014, 08:48:08 PM

PM me your address and I'll send you a couple, not worth ordering on line unless you need some more stuff.

Title: Re: Bally coil transistor
Post by: pinball god on September 08, 2014, 09:06:07 PM

Quote from: vanhos on September 08, 2014, 08:06:52 PM

Hi I'm looking for an equivalent transistor for my  drop target coil se9302.

Is it a tip102. If it is, does anybody no were I can get one from online.  

for future ref, rtbb sell tip102 if you are after these.

Title: Re: Bally coil transistor
Post by: Boots on September 08, 2014, 11:42:32 PM

TIP102 or TIP122 will do just fine, Jaycar sell them but RS are cheaper if you plan ahead.

Title: Re: Bally coil transistor
Post by: vanhos on September 09, 2014, 08:19:16 AM

 Thanks heaps guys.

Just a quick question. The reason for the transistor blowing I think was a dodgey diode (broke away in my hand). I have since red up about these transitors bed found if the wires are reversed on the solonoid we could do some damage again.

So just checking the common cables to the coil ( fat cables) should be on the same side as the band in the diode?

Hope u guys understand the question.  !@)

Title: Re: Bally coil transistor
Post by: Strangeways on September 09, 2014, 09:40:45 AM

Quote from: vanhos on September 09, 2014, 08:19:16 AM

Thanks heaps guys.

Just a quick question. The reason for the transistor blowing I think was a dodgey diode (broke away in my hand). I have since red up about these transitors bed found if the wires are reversed on the solonoid we could do some damage again.

So just checking the common cables to the coil ( fat cables) should be on the same side as the band in the diode?

Hope u guys understand the question.  !@)

The diode can be soldered to the coil either way - but you are correct - the two larger gauge wires must be soldered on to the banded side of the diode.

Title: Re: Bally coil transistor
Post by: pinnies4me on September 09, 2014, 10:38:33 AM

I've put a couple of the transistors in an express post envelope, you should have them tomorrow.

Title: Re: Bally coil transistor
Post by: vanhos on September 09, 2014, 06:29:56 PM

Cheers guys thanks heaps.  Will let you know how I get on.

Title: Re: Bally coil transistor
Post by: vanhos on September 10, 2014, 10:36:16 PM

Thanks pinnes4me received them today. Oh you one!!!

Title: Re: Bally coil transistor
Post by: pinnies4me on September 10, 2014, 11:26:03 PM

No worries, good luck with the repair.

Title: Re: Bally coil transistor
Post by: vanhos on September 11, 2014, 07:50:56 PM

 #*# #*#

All fixed. New resistor, diode's and a transistor. Target reset now works great. Even seems a bit more powerful than before.

I replaced the diode on the solenoid it actually fell apart as I removed it so I'm thinking that was the course from the start and the solenoid board Copt the brunt of the failing diode. 


Thanks heaps aussiepinball again. And big thanks to pinnies4me.

Title: Re: Bally coil transistor
Post by: Mr Pinbologist on September 11, 2014, 08:22:42 PM

Well done getting it going again  ^^^ ^^^

And yes you're right, a failing solenoid diode will most certainly destroy a driver transistor  *%* *%*

Title: Re: Bally coil transistor
Post by: pinnies4me on September 11, 2014, 10:47:47 PM

Well done in diagnosing and repairing the problem!  ^^^