Seeburg DS 100 pulse amp problem

vaguy2222 · by **vaguy2222** » Sat May 14, 2016 4:12 pm

Thanks guys for the tips. Ive decided to take this to a very experinced shop in North Carolina. This Guy is an operator in a family run business since the late 30 s I'm sure he can sort this thing out.

by **Ron Rich** » Sat May 14, 2016 4:17 pm

Probably a good move--let us know how it works out ! Ron Rich

AllSystemsTechCA · by **AllSystemsTechCA** » Sat May 14, 2016 5:47 pm

I found the reference to the 1.5A in this discussion:

https://www.flippers.com/Seeburg-tormat.html

I agree that the steady state current I measure is around 30-40mA but it's the surge current from the rapid discharge of that capacitor triggering the toroid flip (detent switch).

I'm not disputing that something else might be out of spec on my unit... Just that the level of current reaching the Tormat is critical.

The ESR of the capacitor could be at play too, causing a lower than desired current. I was using polypropylene caps.

Rob-NYC wrote:Rubin, I don't know where you got the figure of 1.5 A for R-O -but it is bizarrely wrong.

Typical readout current at the plungers is 34ma @ 300VDC.

The HVDC supply is not even capable of 1.5A.

the time constant of 0.15 has always been adequate in the dozens of machines I've rebuilt and the 9 old relics I have on location. I use mylar caps here, but type is not critical, minimal leakage is.. I suspect other components are actually at-fault here. One important one if the 100mH choke at the detent sw. Typical failure points are the resistors inline with the R-O source.

By the way, using a 1.5V cell to set the Tormat to all selected (or all de-selected depending on the polarity) still never worked for me. Maybe the batteries I had were just not the same as back in the day. A 1.5A constant current power supply did work.

Right there indicates a problem that has not been addressed. I carry an old AA cell in my briefcase tools and that has always been adequate to flip all the toroids.

There is more work to do on that machine.

Rob-NYC

vaguy2222 · by **vaguy2222** » Mon May 16, 2016 10:55 pm

Hi Ron, I'll let you know what was wrong when I get it back probally in a month or so. His shop is very busy.

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Seeburg DS 100 pulse amp problem

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