Re: G05: no heater glow?!?

From: John Robertson <jrr_at_flippers.com>
Date: Wed Jul 14 1999 - 17:16:28 EDT

Go to any TV repair shop, virtually any B&W tube that is the same size
should work...

John :-#)#

At 12:30 PM 7/14/99 -0400, ddhumphr wrote:
>Thanks John,
>
>That, unfortunately, is the answer I wasn't looking for. The heater is open.
>Anyone have a nice cocktail B/W tube?
>
>
>Ace
>
>
>John Robertson wrote:
>
> > The resistance across the filament should be around 20 or so ohms. Not
> > sure, haven't measured for a while, but won't be over 100, that's for sure!
> >
> > John :-#)#
> >
> > At 11:16 AM 7/14/99 -0400, ddhumphr wrote:
> > >John Robertson wrote:
> > >
> > > > If the heater is open you should see infinite resistance, not megohms.
> > > > Check the heater resistor, it might be open. Do you get 6.3V across the
> > > > heater pins at the tube? Any chance that the tube socket has
> cracked traces
> > > > right at the trace to socket solder junction (Like, resolder these
> dude!)
> > >
> > >Can't hurt. I always get snagged by assumptions. ...makes sense to go
> > >right to
> > >the pins at the tube and see if they're getting the AC. Good thoughts
> > >John. Any
> > >idea what the resistance might be across the tube's heater?
> > >
> > >
> > >Ace
> >
> > 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."
>
>--
>David Humphrey
>Network Consultant
>Professional Services
>
>GTE Technology Organization
>10 Fawcett St.
>Cambridge, MA 02138
>e-mail: david@bbn.com
>tel: 617 873 7548
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  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 Wed Jul 14 16:45:07 1999

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