On Mar 8, 6:26*pm, Winston wrote:
klem kedidelhopper wrote:
On Mar 7, 11:35 pm, *wrote:
klem kedidelhopper wrote:

(...)

I didn't get to work on the radio today and probably won't be able to
tomorrow either as work, (the kind you get paid for) has to take
precedence over my hobby. Although my "hobby" as of late has seemed to
be more like my nemesis to be exact. Thanks once again for all your
input. Lenny
T
Did you happen to re-solder F IV pin 10 and
inspect the associated trace, Lenny?

I think Sylvia made a good point about it.

It would be hugely amusing to measure the voltage dropped
across R21 and R28 during functional / non-functional
circumstances. You could use them as current sense resistors
to point you in the direction of the open or short.

--Winston

I know she was and it made perfect sense, but I was all over pin 10
and it's associated resistors. I had FIV out to replace AF126II in
fact and reinstalled it. I can't see anything wrong with the trace or
any traces for that matter. Tomorrow I'm going to take another look at
this. I'm going to check those two voltage drops, go and no go as you
suggested and I'll let you know. Lenny

Good.

I will Watch This Space. *

--Winston

Today I took the time to thoroughly clean all the old caked on flux
off the areas that I've been working on and others also in order to
get a better look at the board. I removed R22 and it tested OK. I put
it back and reset the bias on the emitter of AF126 I to exactly 1.18V
With this bias all the other voltages seem to be very close to what's
shown on the schematic as well. I also did reflow some other suspect
solder connections using Kester mildly activated liquid flux. I
measured the following voltages before it became very intermittent
again. Group 1 is with the radio working.. Group 2 is after the radio
became very intermittent.
group1:
Vr28 .078V
vr21 .012V
Vr29 .0067V
Vr22 5.80V
Vr26 5.41V
Vr25 .057V

group 2
Vr28 2.00V
Vr21 2.10V
Vr29 .0011V
Vr22 2.30V
Vr26 2.60V
Vr25 .105V

I don't know if this was a coincidence or what but I had taken the
above sets of voltages and had then decided to try to measure the E -
C voltage on AF126 I. As soon as I placed my probe on the collector I
must have detuned the circuit as the radio completely quit. I removed
the probe, it began working again briefly and then it started
crackling and soon after became constantly intermittent. Did I "shock"
something I wonder or was it just only a coincidence? Right now it's
in limbo between working and not, so intermittent that I can't really
look at anything.. Lenny