My Rottendog WDB089 Blew up at the Cleveland Pinball and Arcade show. No more 5V and no more 50V and yes I tested the fuses.
I know the 5V regulator is a LM1085 but what are the diodes that have been substituted in place of bridge?
The large diodes in the place where the bridges would normally go--the barrel-shaped black components with the gray band on one side.
If you arrange four diodes a certain way, you end up with a bridge rectifier.
I get that, what is the specific diode part/spec?
I need to order parts and I haven’t pulled them off the board yet to try and find any markings on them.
I am not sure about the Rottendog board. But I think when I got them for a WPC-95 game (TOTAN) they were listed as P600D.
P600D NTE Equivalent NTE5814 400V 6A.
I don't see them on GPE but I do see 6A4 that are the same specs -> https://www.greatplainselectronics.com/proddetail.asp?prod=6A4
Hopefully someone else will chime in. Have you tested the diodes and confirmed any are bad or tested the voltages at them? If you find a bad one post the number any I am sure I (or someone) will have the right spec.
Quoted from G-P-E:P600D = 6A4.
Eons ago, I figured that four of these 6 amp diodes are actually *better* than one solid 35A bridge rectifier but I can no longer find the math behind that to see if it is true depending on heat sinks on the bridges.
Ed
Do you carry the equivalent replacement LM1085 5v regulator as well?
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