03-25-2014, 10:50 PM
You know I like vintage machines, had to share one of a couple of my finds.
PRO-2 A.H. Pro IB metal detector, excellent shape and worked. So I thought.
http://www.intexsystemscorp.com/ahpro.htm
Amazing detectors in the 1970's with the ability to see thru nails and iron. They null on and will detect a silver gold coin ring amongst the iron trash. Not known for amazing depth but for see thru of trash.
The machine drifted a bunch and didn't seem to operate properly.
So I dug inside and did some surgery. Replaced all electrolytic capacitors.
Got carried away and switched all the carbon film resistors for some precision 1% tolerance metal film resistors. Cleaned the pots and switches.
Changed the hardwired search coil to the circuit board. Added a coil cable connector and control box coil cable jack. Had a spare Tesoro type connectors sitting here.
When it was all done, the PRO-2 is nice and stable and works purdy.
[attachment=1431]
PRO-2 A.H. Pro IB metal detector, excellent shape and worked. So I thought.
http://www.intexsystemscorp.com/ahpro.htm
Amazing detectors in the 1970's with the ability to see thru nails and iron. They null on and will detect a silver gold coin ring amongst the iron trash. Not known for amazing depth but for see thru of trash.
The machine drifted a bunch and didn't seem to operate properly.
So I dug inside and did some surgery. Replaced all electrolytic capacitors.
Got carried away and switched all the carbon film resistors for some precision 1% tolerance metal film resistors. Cleaned the pots and switches.
Changed the hardwired search coil to the circuit board. Added a coil cable connector and control box coil cable jack. Had a spare Tesoro type connectors sitting here.
When it was all done, the PRO-2 is nice and stable and works purdy.
[attachment=1431]