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(Topic ID: 299633)

Looking for values for these resistors.

By DreB

2 years ago


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  • Latest reply 2 years ago by DreB
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#2 2 years ago
 
TK

Tuukka

Pinside member

FI Lempäälä

5y 78,350 1,754 16 18

R16 = 330 ohm 1/2 watt
R17 = 120 ohm 1/2 watt
CR3 = CR4 = 1N4004 (OK to use 1N4007)

Make sure to thoroughly brush off all the charred area on circuit board to avoid shorts!

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#7 2 years ago
 
TK

Tuukka

Pinside member

FI Lempäälä

5y 78,350 1,754 16 18

Yes, Future Spa uses the same boards.

Just make sure that if the repair kit is for CPU battery corrosion damage repair, you dont mix up the resistors on CPU and driver board, R16 on the CPU board is 2k and R16 on the driver board is 330 ohm.

TIP102 and 1N4007 are fine.

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#19 2 years ago
 
TK

Tuukka

Pinside member

FI Lempäälä

5y 78,350 1,754 16 18

Knocker coil looks OK - not burned out - and the diode is wired correctly (+43V on the banded side). So as Quench said, check the fuse. The MPU board expects to see "zero crossings", or alternating voltage, but if F4 is blown, they never appear.

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