3400 WurliTzer help--please--

by **Ron Rich** » Sun Apr 03, 2011 6:14 pm

Hi All,
On a 3400 WurliTzer "Selection Accumulator Plate", there is a zener diode and a cap. The values are NOT listed (or I'm blind) in the Service Manual. Has anyone got an idea as to values here ? This is the area where the "number, and letter patches" are located, and it is in series (fires) with the selection (pin release) magnate. TIA, Ron Rich

MattTech · by **MattTech** » Sun Apr 03, 2011 6:52 pm

Hi Ron,
As far as the zener diode is concerned, try this...
If you can unsolder it and carefully (with a magnifier) check it out, it might clue you in on the value.
How to read it is..... rotate it, noting the markings.... for instance.. 5, then a dot/period, then maybe a 6
That would mean 5.6 volt zener.

As far as wattacge ratings, use a 1 watt at least.....if it's the same size as a standard resistor, go for 2 watts.

The capacitor, if you could post a photo might help me.
Hope this helps -M

by **Ron Rich** » Tue Apr 05, 2011 9:49 pm

Got the info thanks to John at flippersdotcom --posted if you want to write it in your books--
ZD are, 56 v 1 watt 1N4758 - cap is .18x75v

jukeman · by **jukeman** » Thu Jul 28, 2011 6:45 am

hi ron ...i`ve got a 3400 i`m working on ..i`ll look and see what it is......jukeman

jukeman · by **jukeman** » Thu Jul 28, 2011 8:45 pm

ron on the 3100 it shows the cap as 18 mfd .75v x2...and the part #for the 2 zenner as 128449...the 3100 might be in a lot of ways like the 3400..jukeman

by **Ron Rich** » Thu Jul 28, 2011 10:27 pm

Jukeman,
Thanks--but two things--read the above posted "answers" before taking the time to research an answer--and-- the 3100 series is totally different from the 3400 series--thanks anyway !! Ron Rich