Re: Help 'tuning' Trapshoot wallhanger receiver board (1975)

That may explain why I've been having so many problems. I thought they had
to be the exact frequency.

If this turns out to be the problem, I will compensate you!

Thanks for being extremely helpful.

If not, I will definitely be buying the receiver board from you.

Thanks a bzillion John,

-mt

-----Original Message-----
From: John Robertson <jrr@flippers.com>
To: Mike Treu <mtreu@execpc.com>
Date: Tuesday, January 02, 2001 5:58 PM
Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board (1975)

>Hmm, I recall that the receiver and transmitter crystals were different
>frequencies. Let me look it up...
>My notes indicate that the transmitter crystal is 455khz higher than the
>receiver...
>
>John :-#)#
>
>At 10:21 AM 03-01-01, Mike Treu wrote:
>>456K offset!?!
>>
>>I've been trying to use exact same valued crystals. Is that not correct?
>>
>>-mt
>>
>>-----Original Message-----
>>From: John Robertson <jrr@flippers.com>
>>To: Mike Treu <mtreu@execpc.com>
>>Date: Tuesday, January 02, 2001 12:16 PM
>>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board (1975)
>>
>>
>> >Hi Mike!
>> >
>> >You need an INTERNATIONAL money order. The Post Office has them, as well
as
>> >banks. The rest of your info is correct. Do you have the receiver
crystal,
>> >and if not what is the frequency of your transmitter crystal..they have
to
>> >match (with a 456k offset as I recall.
>> >
>> >John :-#)#
>> >
>> >At 01:03 AM 03-01-01, Mike Treu wrote:
>> >>Will do!
>> >>
>> >>I see you are in Canada, so I will get a money order for the $80 (it
may
>> >>take me a couple of days for the MO).
>> >>
>> >>I am sending it to John's Jukes Ltd. 2343 Main St., Vancouver, BC,
Canada
>> >>V5T 3C9.
>> >>
>> >>If that's not okay, please let me know ASAP.
>> >>
>> >>Thanks John!
>> >>
>> >>-mt
>> >>
>> >>-----Original Message-----
>> >>From: John Robertson <jrr@flippers.com>
>> >>To: Mike Treu <mtreu@execpc.com>
>> >>Date: Saturday, December 30, 2000 10:39 AM
>> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board (1975)
>> >>
>> >>
>> >> >Hi!
>> >> >
>> >> >NOS $80US popped in the mail...
>> >> >
>> >> >John :-#)#
>> >> >
>> >> >At 12:21 AM 31-12-00, Mike Treu wrote:
>> >> >>Hi John,
>> >> >>
>> >> >>It's after the holidays, and I got a bit of spare cash.
>> >> >>
>> >> >>Thought I would check to see if you would still be interested in
>>selling
>> >>the
>> >> >>NOS Trapshoot receiver board.
>> >> >>
>> >> >>I'm tired of looking at the wire hanging out the back of the thing!
>> >> >>
>> >> >>If so, LMK the total with shipping to Appleton, WI.
>> >> >>
>> >> >>Thanks a bunch - hope your holidays were fun!
>> >> >>
>> >> >>-mt
>> >> >>
>> >> >>-----Original Message-----
>> >> >>From: John Robertson <jrr@flippers.com>
>> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >>Date: Saturday, October 14, 2000 10:02 PM
>> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board
(1975)
>> >> >>
>> >> >>
>> >> >> >Hi Mike!
>> >> >> >
>> >> >> >I'll have to see if I can find a used one, the one I thought was
used
>> >> >> >turned out to be the NOS one...
>> >> >> >
>> >> >> >John :-#)#
>> >> >> >
>> >> >> >At 07:44 PM 10/14/00, Mike Treu wrote:
>> >> >> >>I really don't need a NOS one.
>> >> >> >>
>> >> >> >>$50 is about as high as I can go.
>> >> >> >>
>> >> >> >>I'll do the original $50 for a used one if it includes the
shipping
>>and
>> >> >>the
>> >> >> >>tuning notes.
>> >> >> >>
>> >> >> >>LMK and I can shoot out cash right away.
>> >> >> >>
>> >> >> >>Thanks John,
>> >> >> >>
>> >> >> >>-mt
>> >> >> >>
>> >> >> >>-----Original Message-----
>> >> >> >>From: John Robertson <jrr@flippers.com>
>> >> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >> >>Date: Saturday, October 14, 2000 5:34 PM
>> >> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board
>>(1975)
>> >> >> >>
>> >> >> >>
>> >> >> >> >Actually there was not a crystal for the receiver, they run $10
>> >>each...
>> >> >> >> >I found that I have a NOS receiver for the games with it's
26.540
>>MHz
>> >> >> >> >crystal, $75US plus $10US postage-includes the alignment pages
>> >> >> >> >John :-#)#
>> >> >> >> >
>> >> >> >> >At 03:30 PM 10/14/00, Mike Treu wrote:
>> >> >> >> >>Oh, for the $50 - could I also get a matching crystal to pop
into
>>my
>> >> >> >> >>transmitter? That way I wouldn't have to doodle with the
tuning
>> >> >>(although
>> >> >> >> >>the notes will still be helpful in the future just in case).
>> >> >> >> >>
>> >> >> >> >>-mt
>> >> >> >> >>
>> >> >> >> >>-----Original Message-----
>> >> >> >> >>From: John Robertson <jrr@flippers.com>
>> >> >> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >> >> >>Date: Saturday, October 14, 2000 11:37 AM
>> >> >> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver board
>> >>(1975)
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> >The problem is you need to tune the coils in sequence, and
use
>>a
>> >> >>scope
>> >> >> >>to
>> >> >> >> >> >watch the results...I have spare receivers, but
>>untested...$50US.
>> >> >> >> >> >
>> >> >> >> >> >John :-#)#
>> >> >> >> >> >
>> >> >> >> >> >At 08:31 AM 10/14/00, Mike Treu wrote:
>> >> >> >> >> >>Thanks John. I don't know if US checks are a pain to cash
for
>> >>you.
>> >> >>I
>> >> >> >> >>will
>> >> >> >> >> >>throw $10 in an envelope to keep it simple for you. I will
>>get
>> >>that
>> >> >> >>out
>> >> >> >> >>on
>> >> >> >> >> >>Monday.
>> >> >> >> >> >>
>> >> >> >> >> >>I will probably post for a receiver board at the same time.
>> >>Perhaps
>> >> >> >> >>someone
>> >> >> >> >> >>has one lying around from a game with a junk screen or
>>something.
>> >>I
>> >> >> >> >>really
>> >> >> >> >> >>think there is something wrong with one of the parts on the
>> >>board -
>> >> >>I
>> >> >> >> >>don't
>> >> >> >> >> >>think it should be as delicate to tune as this.
>> >> >> >> >> >>
>> >> >> >> >> >>Thanks a bunch,
>> >> >> >> >> >>
>> >> >> >> >> >>-mt
>> >> >> >> >> >>
>> >> >> >> >> >>-----Original Message-----
>> >> >> >> >> >>From: John Robertson <jrr@flippers.com>
>> >> >> >> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >> >> >> >>Date: Wednesday, October 11, 2000 7:10 PM
>> >> >> >> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver
board
>> >> >>(1975)
>> >> >> >> >> >>
>> >> >> >> >> >>
>> >> >> >> >> >> >Hi Mike!
>> >> >> >> >> >> >
>> >> >> >> >> >> >Postage to USA is included. It's only four pages, but is
>>fairly
>> >> >> >> >> >> >comprehensive. It is for a different manufacturer, but as
>>far
>> >>as
>> >> >> >>Iknow
>> >> >> >> >>they
>> >> >> >> >> >> >used the same receiver. Certainly the theory is the same.
>> >> >> >> >> >> >You can phone us and give your credit card number.
>> >>(604)872-5757,
>> >> >>we
>> >> >> >>are
>> >> >> >> >> >> >here until 5:30 PCT, about 7:30 your time
>> >> >> >> >> >> >
>> >> >> >> >> >> >John :-#)#
>> >> >> >> >> >> >
>> >> >> >> >> >> >At 04:58 PM 10/11/00, Mike Treu wrote:
>> >> >> >> >> >> >>I do have the original manual.
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>But I am definitely interested in a copy of the
alignment
>> >> >> >>information.
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>Let me know how much plus postage and where to mail it
to.
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>My address is:
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>MIKE TREU
>> >> >> >> >> >> >>W3062 SPRINGFIELD DR.
>> >> >> >> >> >> >>APPLETON, WI 54915
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>Thanks John!
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>-mt
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>-----Original Message-----
>> >> >> >> >> >> >>From: John Robertson <jrr@flippers.com>
>> >> >> >> >> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >> >> >> >> >>Date: Wednesday, October 11, 2000 6:20 PM
>> >> >> >> >> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger receiver
>>board
>> >> >> >>(1975)
>> >> >> >> >> >> >>
>> >> >> >> >> >> >>
>> >> >> >> >> >> >> >Do you have the original Trapshoot manual ($20US)? I
did
>> >>find
>> >> >>my
>> >> >> >> >> >>alignment
>> >> >> >> >> >> >> >information for game receivers. $10US plus postage to
>>USA.
>> >>No
>> >> >> >>charge
>> >> >> >> >>for
>> >> >> >> >> >> >> >this if you buy the Trapshoot manual.
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >John :-#)#
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >At 05:00 AM 10/9/00, Mike Treu wrote:
>> >> >> >> >> >> >> >>Thanks a bunch for the response!
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>I have a manual which allowed me to find out the
zener
>>was
>> >>bad
>> >> >>on
>> >> >> >> >>the
>> >> >> >> >> >> >> >>receiver board.
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>I also have two transmitters, which are outputting
the
>>same
>> >> >> >>strength
>> >> >> >> >>of
>> >> >> >> >> >> >> >>signal, so I am sure they are both good.
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>I have found the receiver to be extremely touchy, and
>> >>probably
>> >> >> >>made
>> >> >> >> >>a
>> >> >> >> >> >> >> >>mistake by trying to 'tune' it myself. What I did
was
>>take
>> >>a
>> >> >>5K
>> >> >> >>pot
>> >> >> >> >> >>and
>> >> >> >> >> >> >>put
>> >> >> >> >> >> >> >>it in series with a hardwire right to the antennae on
>>the
>> >> >> >> >>transmitter
>> >> >> >> >> >> >> >>(starting with it shorted). I tuned it to trip the
>>output,
>> >> >>then
>> >> >> >> >>slowly
>> >> >> >> >> >> >> >>turned the pot to add more and more resistance, while
>> >>tuning
>> >> >>it
>> >> >> >>in
>> >> >> >> >>each
>> >> >> >> >> >> >> >>time. This works fairly well until I advance to
>>removing
>> >>the
>> >> >> >>wire
>> >> >> >> >> >> >> >>completely. I can get the thing working and start
>>moving
>> >>the
>> >> >>box
>> >> >> >> >>away
>> >> >> >> >> >> >>from
>> >> >> >> >> >> >> >>the main unit using the same method. This works
until I
>> >>get
>> >> >> >>about 5
>> >> >> >> >> >>feet
>> >> >> >> >> >> >> >>away - then it stops working (and my batteries are
>>good).
>> >> >>It's
>> >> >> >>also
>> >> >> >> >> >>fussy
>> >> >> >> >> >> >> >>as to where I place the transmitter (level with the
>>bottom
>> >>of
>> >> >>the
>> >> >> >> >>game
>> >> >> >> >> >> >>works
>> >> >> >> >> >> >> >>great, not much else).
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>Are these things supposed to be thaaaaat touchy?
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>Gremlin had to put out some kind of troubleshooting
>>thing
>> >>on
>> >> >> >> >>waveforms
>> >> >> >> >> >> >> >>through various stages of the receiver - that was
really
>> >>what
>> >> >>I
>> >> >> >>was
>> >> >> >> >> >>hoping
>> >> >> >> >> >> >> >>to get.
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>If you can help me, I will definitely pay you. I
know
>>how
>> >> >> >>valuable
>> >> >> >> >> >> >> >>troubleshooting tips are from experienced people - I
do
>>it
>> >> >> >>myself!
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>If the notes are good, I'll give you $25 for them
alone!
>> >>I've
>> >> >> >> >>logged a
>> >> >> >> >> >> >>lot
>> >> >> >> >> >> >> >>of time on this puppy.
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>Thanks,
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>-mt
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>-----Original Message-----
>> >> >> >> >> >> >> >>From: John Robertson <jrr@flippers.com>
>> >> >> >> >> >> >> >>Newsgroups: rec.games.video.arcade.collecting
>> >> >> >> >> >> >> >>To: Mike Treu <mtreu@execpc.com>
>> >> >> >> >> >> >> >>Date: Sunday, October 08, 2000 11:48 PM
>> >> >> >> >> >> >> >>Subject: Re: Help 'tuning' Trapshoot wallhanger
receiver
>> >>board
>> >> >> >> >>(1975)
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >> >I have worked on those units in the past and I
believe
>>I
>> >> >>still
>> >> >> >> >>have
>> >> >> >> >> >>my
>> >> >> >> >> >> >> >> >notes on servicing those units. I have spare
original
>> >> >>manuals
>> >> >> >>for
>> >> >> >> >> >> >> >> >those games, $25US manual and notes plus $3US (for
>> >> >>USA/Canada)
>> >> >> >> >> >> >> >> >postage. You will need 'scope to adjust these
>>correctly.
>> >>I
>> >> >>can
>> >> >> >> >> >>advise
>> >> >> >> >> >> >> >> >you a bit as well...I did find the easiest way to
>>adjust
>> >>the
>> >> >> >> >> >> >> >> >transmitter was a single loop of wire twice around
the
>> >> >> >>transmitter
>> >> >> >> >> >> >> >> >connected to ground and the probe of the scope.
This
>> >>gives a
>> >> >> >>nice
>> >> >> >> >> >> >> >> >no-load method of making sure the transmitter is
>>putting
>> >>out
>> >> >>a
>> >> >> >> >>good
>> >> >> >> >> >> >> >> >signal, once that is valid, then you set the
receiver.
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >> >John :-#)#
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >> >On Sun, 8 Oct 2000 13:03:48 -0500, "Mike Treu"
>> >> >> >><mtreu@execpc.com>
>> >> >> >> >> >> >> >> >wrote:
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >> >>My RF receiver board is waaaaay out of whack.
>> >> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >> >>Does anybody have any experience and/or literature
on
>> >>how
>> >> >>to
>> >> >> >> >>tunes
>> >> >> >> >> >> >>these
>> >> >> >> >> >> >> >> >>guys in?
>> >> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >> >>ANY help is greatly appreciated!
>> >> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >> >>-mt
>> >> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >> > (Please post followups or tech enquires to the
>> >> >>newsgroup)
>> >> >> >> >> >> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC,
>>Canada
>> >>V5T
>> >> >>3C9
>> >> >> >> >> >> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs,
Jukes,
>> >>Video
>> >> >> >>Games)
>> >> >> >> >> >> >> >> > mailto:jrr@flippers.com, web page
>> >>http://www.flippers.com
>> >> >> >> >> >> >> >> > "Old pinballers never die, they just flip
>>out."
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC,
Canada
>>V5T
>> >> >>3C9
>> >> >> >> >> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes,
>>Video
>> >> >> >>Games)
>> >> >> >> >> >> >> > http://www.flippers.com
>> >> >> >> >> >> >> > "Old pinballers never die, they just flip
out."
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >
>> >> >> >> >> >> >
>> >> >> >> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada
V5T
>> >>3C9
>> >> >> >> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes,
Video
>> >> >>Games)
>> >> >> >> >> >> > http://www.flippers.com
>> >> >> >> >> >> > "Old pinballers never die, they just flip out."
>> >> >> >> >> >> >
>> >> >> >> >> >
>> >> >> >> >> >
>> >> >> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T
>>3C9
>> >> >> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video
>> >>Games)
>> >> >> >> >> > http://www.flippers.com
>> >> >> >> >> > "Old pinballers never die, they just flip out."
>> >> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T
3C9
>> >> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video
>>Games)
>> >> >> >> > http://www.flippers.com
>> >> >> >> > "Old pinballers never die, they just flip out."
>> >> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
>> >> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video
Games)
>> >> >> > http://www.flippers.com
>> >> >> > "Old pinballers never die, they just flip out."
>> >> >> >
>> >> >
>> >> >
>> >> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
>> >> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
>> >> > http://www.flippers.com
>> >> > "Old pinballers never die, they just flip out."
>> >> >
>> >
>> >
>> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
>> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
>> > http://www.flippers.com
>> > "Old pinballers never die, they just flip out."
>> >
>
>
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> http://www.flippers.com
> "Old pinballers never die, they just flip out."
>
Received on Tue Jan 02 22:32:44 2001