[Collins] 32S-3 problem

[Al Parker]

Thanks Alan,
	That looks like it.  Those 2 resistors have been very hot, can't read 
the colors, and they measure something over 90k.  I'll get digging 
around here to find a suitable replacement, don't see a 33k 5w right off 
the bat, but have other options.
	They way they're in the ckt, a tube pin resistance check won't spot them.
tnx agn, 73,

Al, W8UT
On 12/12/2014 10:41 AM, Alan Chandler wrote:
> Hi Al
> The first thing to check is the pair of 68K 2W resistors in the VOX circuit.
> They are a bit under rated and when they fail it causes the PTT problem.
> Replace them with a 33k 5w wire wound.
> 73, Alan K6RFK
>
> -----Original Message-----
> From: Collins [mailto:collins-bounces at mailman.qth.net] On Behalf Of Al
> Parker
>
> Hi folks,
>       I'm working at a 32S-3 for a friend.  Initial problem is that it "keys
> up" about 3-5 seconds after power up.  The finals go into idle, but no
> further.  I think I need to solve the key-up problem first.
>       I've checked voltages and resistances in the vox/relay control area,
> can't find any problems.  Checked tubes, even substituted for the relay
> actuator.  Unplugging any tubes other than the relay actuator
> (6U8) tube will not un-key it.  Grounding it's grid doesn't help.  When
> switched to "tune" the finals' plate current goes to zero, but the relay
> doesn't drop out.  (the PTT switch is off)
>       It's been a while since I've worked on a 32S-x, so I keep wondering
> what I'm missing.  Any thoughts would be greatly appreciated.
> thanks, 73,
>
> Al, W8UT