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(Topic ID: 208606)

Doctor Who Solenoid problem

By acmeman

6 years ago


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  • Latest reply 6 years ago by acmeman
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#26 6 years ago
 
???

ScottSerpa

Pinside member

US Albany, OR

7y 22,150 90

Q82 should be the transistor on the power driver board. Also check R123,124 and 125 as well as Q81.

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#28 6 years ago
 
???

ScottSerpa

Pinside member

US Albany, OR

7y 22,150 90

Page 3-8 of the manual shows the trap door (sol 1) going to pin 1 of J130. Page 5, (sheet 3 of 3 Power/Driver) of the WPC schematic manual shows the circuit for the transistors for J130.

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WPC (resized).jpgWPC (resized).jpg

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#30 6 years ago
 
???

ScottSerpa

Pinside member

US Albany, OR

7y 22,150 90

Make sure to check that transistor. I would hate to see you burn up a new coil.

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#32 6 years ago
 
???

ScottSerpa

Pinside member

US Albany, OR

7y 22,150 90

Not 100% every time but in most cases the coil is bad for a reason. It only takes a few seconds to check the transistor so better to be safe than sorry.

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