ozfalcon Posted October 6, 2018 Share Posted October 6, 2018 (edited) What is the Thermistor value for a WPC powerbox? NTC 5D-11 is listed at Johns arcade MOV/NTC kit. https://www.johns-arcade.com/product-page/mov-ntc However the part number in WPC-95 schematic 5016-12978-00 indicates an 8amp 2.5 ohm R25 type (CL-030). https://www.marcospecialties.com/pinball-parts/5016-12978-00 http://arcarc.xmission.com/Pinball/PDF%20Pinball%20Misc/Williams%20WPC-95%20Schematics%20Manual.pdf Which would be closer to NTC 3D-20 Edited October 21, 2018 by ozfalcon Link to comment Share on other sites More sharing options...
ozfalcon Posted October 6, 2018 Author Share Posted October 6, 2018 Is the cold resistance of 2.5 ohm a bit low and 5 ohm cold resistance a more desirable (less) current on power up? Link to comment Share on other sites More sharing options...
Boots Posted October 6, 2018 Share Posted October 6, 2018 Is the cold resistance of 2.5 ohm a bit low and 5 ohm cold resistance a more desirable (less) current on power up? 5d-11 tend to get hot, I think its rated at 4 amps max so it could be running on the brink I would recommend 5d-15, I think about 6 amps This seller posts reasonably fast https://www.ebay.com.au/itm/5Pcs-5D-15-Ntc-5D-15-Thermistor-zh/292044915486?hash=item43ff3bc31e:g:U0UAAOSwE9RbPdh0 Link to comment Share on other sites More sharing options...
Ballypinball Posted October 6, 2018 Share Posted October 6, 2018 What is the Thermistor value for a WPC powerbox? NTC 5D-11 is listed at Johns arcade MOV/NTC kit. https://www.johns-arcade.com/product-page/mov-ntc However the part number in WPC-95 schematic 5016-12978-00 indicates an 8amp 2.5 ohm R25 type (CL-030). https://www.marcospecialties.com/pinball-parts/5016-12978-00 http://arcarc.xmission.com/Pinball/PDF%20Pinball%20Misc/Williams%20WPC-95%20Schematics%20Manual.pdf Which would be closer to NTC 3D-25 We have the genuine Williams ones in stock, is what we use Link to comment Share on other sites More sharing options...
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