Re: Jurassic Park Pinball T-REX MOUTH
- From: RonKZ650 <RonKZ650@xxxxxxx>
- Date: Fri, 17 Aug 2007 07:57:52 -0700
If you reversed the wires, the diode on the coil for the jaw will be
shorted, so you definately need to replace it before proceding into
the transistors. If you replace the transistors without replacing the
diode, the new transistor will be destoyed the first time power is
turned on. So if you didn't replace the diode, do so, then replace Q26
and recheck F5.
On Aug 16, 11:43?pm, frogbri...@xxxxxxxxxxx wrote:
I just bought a Jurassic Park pinball machine. When I got it, the T-
REX would not eat the ball but would move its mouth when up. I
discovered the harness was worn and the inside wires cut. I proceeded
to install new wires (black and a white) but I did not note before
hand which lead was the power. I suppose I reversed them, as when I
turned on the machine, the F5 fuse on the main driver board blew and
transistor Q26 started to melt. I have since replaced the TIP122 Q26
transistor (with a TIP102) as well as the small pre-driver
transistor. Now, while everything else works on the machine, the
mouth does not. Is there a fuse that only controls the mouth? Can
someone please help me...I need to get some sleep and this issue is
keeping me up.
.
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