Hi I have a Browning mark 3 reciever that is not acting correctly and wondered if anyone has run into the issues I am having, so far I have cleaned the relay in the transmitter and tested all the tubes and they all tested good ! The issue is the meter is peaked and never drops down when it warms up like my others do and I hear some voices when the skip is running but when I move the channel selector nothing seems to change I still hear the same voices. When I key another radio here the Browning squeals because I am close but my voice is not heard through it. I tried a different crystal on the channel selector and cleaned the channel selector but that was a no go also, I will eventually install new caps anyways but was wondering if anyone had any ideas ???
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Browning Mark III " reciever issues "
- Thread starter Danzik
- Start date
A resistance check of the meter would reveal if the coil inside it has failed and become an open circuit.
Would be a bummer, but that failure would show this symptom.
The meter's negative side has a diode connected to it. Not a likely part to fail, but testing it would tell you for sure. If it fails and breaks the meter circuit, no meter movement.
The positive side of the meter is connected to the S-meter zero control. If that control goes bad, it will disable the meter.
But that's the hit parade, the diode SR3, the meter itself and R27 the S-meter zero control.
73
Would be a bummer, but that failure would show this symptom.
The meter's negative side has a diode connected to it. Not a likely part to fail, but testing it would tell you for sure. If it fails and breaks the meter circuit, no meter movement.
The positive side of the meter is connected to the S-meter zero control. If that control goes bad, it will disable the meter.
But that's the hit parade, the diode SR3, the meter itself and R27 the S-meter zero control.
73
Attachments
Checked, tested, and even replaced all just for the heck of it with the same exact results, it's not the meter, reciever does not change channels and not receiving correctly
I did finally get it to start receiving last night on and off, it would work one time and not the next. Seems like anytime I would tap on or resolder the joints around the variable cap for the channel selector or the coil or anything in that area the recieve would come back, one time I was even talking into it with a handheld and the reciever was one channel off, now it seems to be on frequency however the S meter won't zero per browning instructions like my other mark III's do ! If I turn the gain all the way down instead of up I can zero the meter but not with the gain turned up like you are supposed to be able to do. It is acting like the gain is supercharged I can turn the gain all the way down and it acts better than with it up and I have tried a different gain pot with the same results so it's not the knob. Anyone have any more ideas or run into this before?
Today I also read the old thread on the drifting fix That Nomad has, for the most part I paid attention to the part where he cleaned the back of the dial shaft with twine to make a good ground, I will definitely be looking into that as it makes sence but not so sure that is going to fix the meter and high gain issue buy I am going to do that anyways. Thanks
Lone behold I got home from work and started playing with the reciever again and it didn't take long to locate the issue! LOL ! That tube had been tested and tested good but when I went to move it from V5 to V7 and after I inserted it this happened, it had to have cracked when I installed it after the tube tester. The meter now drops and sets like it is supposed to, AWESOME 
Indeed Nomad but just makes me wonder how, the tube had to be bad from the start because the radio and the meter never worked correctly and the tube had tested great and appeared the getter was in the tube, not sure what occurred but once that tubed actually cracked and I replaced it the reciever worked great.