[TechAssist] Re: Diagnostic Pulsar Scope for analyzing carengines, model 500, need transistor replacement
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 02 Jun 2004 20:39:50 -0700
There is a dead short from the collector to one of the pins on both of
the transistors. The customer is going to go back to the high school
where he got it to try to find more info. The scope is made by Peerless
Industries.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Al Gutz
Sent: Wednesday, June 02, 2004 7:32 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Diagnostic Pulsar Scope for analyzing car
engines, model 500, need transistor replacement
Kevin
Don't forget that is a germanium transistor. Reads in both directions on
a meter, if I recall it should be about a 10:1 ratio. Don't know if you
can read them on a DMM. You may have to figure out the circuit and take
a guess what the other one is. Its likely a Ge type as well.
Al G
Al's TV-Electronics
Pembroke Ont.
Canada
Kevin wrote:
> This Pulsar Diagnostic Scope has 3 tubes (yes tubes) that test "good"
on
> my Sencore tube tester and 2 shorted transistors. The first
transistor
> is a 2SB337, which crosses to an NTE 121 top hat, and the second one
is
> a TL-2005 which I can find no cross for (also a top hat design).
> Anybody have any information on this old timer? Customer wants it
> fixed. Thanks.
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
>
>
>
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