December 1 997
STAR*TECH JOURNAL
To: STAR TECH JouRNAL
DoN'r THROW THOSE OLD STEERING
WHEELS AND DAYTONA GEARBOXS AWAY!
FRoM: HAPP CoNTRolS
In relation to the article in your Novem-
ber 1997 "Troubleshooting Gun Games
Gun Problems: Symptoms/Solutions".
We have a number of concerns regard-
ing this article. There are a couple of er-
rors in this tech bulletin. We do under-
stand that this is somewhat of a generic
article covering Optic Gun PCBs other
than ours but a majority of the informa-
tion stated in the article seems to target
our boards.
First of all the value of the inductor
(choke) is 5.6mH not 5.2mH as stated in
the body of the text. The actual color
code on the inductors used on our PCBs
is wide silver, green, blue, red, narrow
silver, not yellow, brown, violet. This
would yield a value of .470mH instead of
5.6mH. Further on all the PCBs we have
ever looked at as returns from customers
we have never seen the leads on this de-
vice actually break off. This has been
noted as happening on the Optic Sensor,
but not the inductor.
Second on all the inductors I have ever
measured using a DMM (Digital
MultiMeter) I got a resistance reading
(ohms) in the range of 43 to 73 ohms, not
22 to 26 as stated in the article. The only
true indicator of the inductor being open
is if you show a resistance reading in the
range of 100,000 ohms or higher.
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Third as is the case with most electronic
equipment it is always best to replace ex-
isting parts with an exact replacement.
In a couple areas in this article they are
recommending replacements with non-
standard parts. Not only can this result
in erratic or non operation it will void
any warranty which might apply to this
device.
Some of the modifications may work for
Optic Gun PCBs used by other OEM
manufacturers, but I would not recom-
mend some of these for the Happ Optic
Gun PCBs.
Les Gottschall
Electronics Supervisor
... author's response on page 20.