¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. TekScopes
  2. Messages
Single Messages Topics Expanded Polls

Re: WooHoo! 465B

 

Trigger view as far as I know detaches the vertical pre from the circuit. The service manuals have block diagrams to help segregate the circuit to narrow it down.
Sent on the TELUS Mobility network with BlackBerry
From: "pdxareaid" <public_email@...>
Sender: TekScopes@...
Date: Sun, 23 Sep 2012 21:48:37 -0000
To: <TekScopes@...>
ReplyTo: TekScopes@...
Subject: [TekScopes] Re: WooHoo! 465B

?

lol..i have not had time to do much of anything with it yet (only had it a couple of hours) but i can't resist dropping everything and running out to poke it with these tips rolling in...

when the screen is glowing, none of the controls seems to affect it and it generally lights up the whole screen.

using the beamfinder, i get a bright dot that jumps around and in and out of what looks like it might be trying to show me a reasonable beamfinder display, but severely shift off screen to the right.
the position controls seem to affect it but not in a consistent way...but there is some effect.
all of the beamfinder action appears to be on the right half of the screen.
phil

ps. i'm going to be in trouble if i don't finish some other stuff today...i'll leave poking it again til tomorrow but will check in to soak up the tips for when i do get out there.
thanks for all the help. keep em coming :-)

--- In TekScopes@..., "Brad King" <cpgixxer@...> wrote:
>
> The glow is because the trace isn't centered, could be a bad resistor or transistor in the vertical. Does it move h or v with the adjustment? Did you try pressing the trigger view button?
> Sent on the TELUS Mobility network with BlackBerry
>

> -----Original Message-----
> From: "pdxareaid" <public_email@...>
> Sender: TekScopes@...
> Date: Sun, 23 Sep 2012 21:25:55
> To: <TekScopes@...>
> Reply-To: TekScopes@...
> Subject: [TekScopes] Re: WooHoo! 465B
>
>
> ah, the beamfinder...never was very fond of it. now maybe i see why it is there. thanks for the tip.
>
> sweep rate does not seem to affect anything.
>
> beamfinder:
> I got the usual bright connected 2 (i assume) point display but severely shifted to the right such that only 1/2 of the expected display is on the screen.
> curiously, when i tried that, and released the beamfinder, i got a bright point on the display rather than a full screen glow. then it went back to the glow.
> i tried the beamfinder a few more times and it seemed to start bringing something back from the dead. i even saw it flash what looked like it might have been a reasonable trace...but it disappeared very quickly.
> the burning smell was making me nervous so i shut it down.
>
> are these useful clues?
>
>
> --- In TekScopes@..., larrys@ wrote:
> >
> > "pdxareaid" <public_email@> wrote:
> > > Whole screen glows off and on, no trace to speak of.
> >
> > Does the rate of the on / off vary with the sweep speed setting?
> > Sounds like you may have a trace, just offscreen. See if the
> > beamfinder shows it too you.
> >
> > -ls-
> >
>
Join [email protected] to automatically receive all group messages.