Re: Test equipment

We will all come over and drink all your booze, and empty your fridge if
you do not buy that 'scope!

As for testing it, there is normally a test point on the front of better
scopes that you can hook the probes up to, this is for calibration and will
probably have a nice square wave of about 1V. Each channel should show this
on several ranges, and you can turn the horizontal to see if it compresses
normally. As for any delays, etc, these are difficult to check without
other equipment, but not that useful anyways for most service. You can also
use your finger as a test point! You should see all sorts of 60 cycle noise
if you touch the probe tip and you are not touching the ground of the scope
in any way. This will check the higher voltage settings safely. No current
or course (unless you are holding the hot end of a power cord ;-)

John :-#)#

At 08:42 AM 5/1/2000 , Dan wrote:
>Hey guys,
>
>I'm slowly learning the art of repair on these vector games. I've come
>across a Tektronix model 7603 analog oscilloscope, 4 channel, 100mhz in the
>local paper for $150. I've been watching for something like this to come up
>for a while... The price certainly seems right, but are its capabilities
>sufficient to help troubleshoot vector games?
>
>What should I check out on the unit prior to purchase? The same seller also
>have a HV probe that I am planning on picking up re: discharging monitors :)
>
>Thanks,
>-Dan "Wish I had more free time to spend on this hobby"
>
>
>
>---------------------------------------------------------------------------
>** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
>** message body to vectorlist-request@synthcom.com. Please direct other
>** questions, comments, or problems to neil@synthcom.com.

  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."

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Mon May 1 11:55:51 2000