Recent posts
#1
Technical Support Announcements / July 2025 Huntron Technical Su...
Last post by admin - July 10, 2025, 07:05:41 AMHuntron Workstation version 4.3.9313 is here and includes workflow enhancing features for both the Huntron Trackers and Probers. Quick Tip #32 & #33, included in this newsletter, highlight these new features. A new whitepaper has also been published discussing the basics of reading a schematic. Learn more at the link below!
Huntron Technical Support Newsletter | July 2025
Huntron Technical Support Newsletter | July 2025
#2
General Discussion / Re: stuck working on repairing...
Last post by Al1234 - July 05, 2025, 11:45:02 PMSorry for the long delay, Took transformer out.
Compaired with a new one. Posted pictures, there is a clear difference between signatures.
If you have any thoughts on this please share and let me know.
I connected power to transformers and measured the secondaries with out load. It matches with the new transformer.
Next I was going to do a short circuit test. But I need to clean up the desk and set it up.
Or I could just put the new transformer in there and see if it works.
Compaired with a new one. Posted pictures, there is a clear difference between signatures.
If you have any thoughts on this please share and let me know.
I connected power to transformers and measured the secondaries with out load. It matches with the new transformer.
Next I was going to do a short circuit test. But I need to clean up the desk and set it up.
Or I could just put the new transformer in there and see if it works.
#3
Out of Production Hardware / Re: Tektronix TR-210 Signal Tr...
Last post by Feridun93 - June 28, 2025, 12:31:15 PMHello admin, what kind of transformer is this, what kind of sheet metal is used? Is it true that it is an audio transformer? Thank you very much for your interest and help.
#4
General Discussion / Re: stuck working on repairing...
Last post by Al1234 - June 26, 2025, 07:38:00 PMyap, that is what I was thinking. may be this weekend or in about 10 minutes, LOL
#5
General Discussion / Re: stuck working on repairing...
Last post by CWSmith - June 26, 2025, 05:04:39 PMA DMM may not show an inductive change because it is a DC signal unlike a Tracker. The signatures pretty much point to a faulty transformer. Last step may be looking at it out of circuit.
#6
General Discussion / Re: stuck working on repairing...
Last post by Al1234 - June 26, 2025, 09:14:40 AMThank you for your reply. I tried to respond sooner, but had trouble signing in , my fault
I replaced the pictures with better ones.
There is nothing connected to the secondary from the rest of the board. I removed the rectifier bridge that transformer feeds voltage to.
On yhe primary side, which all the signatures match between the good and the bad board, are 2 zero ohms resister seen in the last picture posted. Resistors, connect to fuse and then a choke and incoming. There is no continuity between secondary and primary of the transfer.
What's interesting is when measuring resistance between the two pens of the secondary, both good and bad board match. it's the same on the primary side, they match. Measurment instrument agilent 34010A.
The only instruments that shows a difference in power off mode testing is my huntron.
Have not done hipot test yet. For that I have to desolder I think.
Nor, have I done any power up measurement yet. Feeding the transformer and measuring the output.
may be a hipot test next.
I replaced the pictures with better ones.
There is nothing connected to the secondary from the rest of the board. I removed the rectifier bridge that transformer feeds voltage to.
On yhe primary side, which all the signatures match between the good and the bad board, are 2 zero ohms resister seen in the last picture posted. Resistors, connect to fuse and then a choke and incoming. There is no continuity between secondary and primary of the transfer.
What's interesting is when measuring resistance between the two pens of the secondary, both good and bad board match. it's the same on the primary side, they match. Measurment instrument agilent 34010A.
The only instruments that shows a difference in power off mode testing is my huntron.
Have not done hipot test yet. For that I have to desolder I think.
Nor, have I done any power up measurement yet. Feeding the transformer and measuring the output.
may be a hipot test next.
#7
General Discussion / Re: stuck working on repairing...
Last post by CWSmith - June 24, 2025, 07:52:38 AMThe faulty board signature is showing a lower impedance suggesting that there is a short somewhere possibly the transformer it self. What else is connected to that circuit?
#8
General Discussion / stuck working on repairing a b...
Last post by Al1234 - June 24, 2025, 12:04:15 AMthis may not be the correct place to post this. I am sure someone will let me know.
I have a board that I am working on. using tracker, found a shorted diode in series with a relay.
replace it. but there is more problems.
it looks like a transformer on the board has very different signature than the reference board transformer.
see pictures with notes.
I removed the bridge thinking problem was the bridge.
I would appreciate to hear other thoughts on this subject.
I am not familiar with transformer signatures and usually they are either out or good. this one has the output Voltage
I have a board that I am working on. using tracker, found a shorted diode in series with a relay.
replace it. but there is more problems.
it looks like a transformer on the board has very different signature than the reference board transformer.
see pictures with notes.
I removed the bridge thinking problem was the bridge.
I would appreciate to hear other thoughts on this subject.
I am not familiar with transformer signatures and usually they are either out or good. this one has the output Voltage
#9
Out of Production Hardware / Re: ProTrack I model 20 proble...
Last post by Paula Silva - June 17, 2025, 04:16:18 AMYes, will look for it, thank you for these tips, jvthorsley! 
#10
Out of Production Hardware / Re: ProTrack I model 20 proble...
Last post by jvthorsley - June 17, 2025, 03:13:44 AMHi Paula
Not sure this will help.
But I guess anything could happen after connecting a ProTrack to a mains supply.
I did a few years back accidently plugged my ProTrack Scanner into a 12 V.D.C adaptor, should be 5 V.D.C.
I put all the details of how I repaired my Scanner on this Forum back on 25th October 2019.
The ProTrack has some isolated D.C. supplies, might be worth checking them.
Not sure this will help.
But I guess anything could happen after connecting a ProTrack to a mains supply.
I did a few years back accidently plugged my ProTrack Scanner into a 12 V.D.C adaptor, should be 5 V.D.C.
I put all the details of how I repaired my Scanner on this Forum back on 25th October 2019.
The ProTrack has some isolated D.C. supplies, might be worth checking them.