01-11-2025, 03:28 AM
Hello friends.
I have not published anything lately because I have been working on a few lost causes. I have been chasing up a CRT for a 25” HMV TV from 1967.
A service manual and belts for a National NV-5120A cartridge Video Recorder. I did however manage to get an E.I.A.J. 8 pin male plug for it.
A Pioneer Laser Disk player that needs special equipment/jigs to work on it. this one I will get rid of, or just have as a static display.
A Rank Arena 14” delta tube colour TV model C-1451 It has a vertical fault but can not be worked on because of its construction. I need extension leads to get it to a point where I can measure some voltages and waveforms. I have a spare Horizontal/Vertical driver board and sockets, but the plugs form part of the PCB. The present thought is to find some nails that are 2.36 mm in diameter and solder wire to the blunt end, then cover the join with heat shrink tubing. The wires from these nails/pins then join to the sockets and leads from an old set. I do wish that I had purchased a set of extension leads from the manufacturer years ago.
I have also been working on several pattern generators of late.
All seem to be afflicted with the same fault. Constructed in a manner to be almost impossible to service. Try to replace the two meters in a
Philips PM 5509 pattern generator and let me know how long it takes you.
Pattern generators seem to be one of the electronic items that one can plug in and be almost guaranteed that they will be suffering from multiple faults!
I've just inherited a Philips PM 5508. It does indeed look to be a better version of the PM 5508. this one has no R.F. output and the service manual does not show section 5, the R.F. out section!
I took a photo of a PM 5509 running three patterns at the same time. I will TRY to upload. It is running checker board, cross hatch, and circle.
I have not published anything lately because I have been working on a few lost causes. I have been chasing up a CRT for a 25” HMV TV from 1967.
A service manual and belts for a National NV-5120A cartridge Video Recorder. I did however manage to get an E.I.A.J. 8 pin male plug for it.
A Pioneer Laser Disk player that needs special equipment/jigs to work on it. this one I will get rid of, or just have as a static display.
A Rank Arena 14” delta tube colour TV model C-1451 It has a vertical fault but can not be worked on because of its construction. I need extension leads to get it to a point where I can measure some voltages and waveforms. I have a spare Horizontal/Vertical driver board and sockets, but the plugs form part of the PCB. The present thought is to find some nails that are 2.36 mm in diameter and solder wire to the blunt end, then cover the join with heat shrink tubing. The wires from these nails/pins then join to the sockets and leads from an old set. I do wish that I had purchased a set of extension leads from the manufacturer years ago.
I have also been working on several pattern generators of late.
All seem to be afflicted with the same fault. Constructed in a manner to be almost impossible to service. Try to replace the two meters in a
Philips PM 5509 pattern generator and let me know how long it takes you.
Pattern generators seem to be one of the electronic items that one can plug in and be almost guaranteed that they will be suffering from multiple faults!
I've just inherited a Philips PM 5508. It does indeed look to be a better version of the PM 5508. this one has no R.F. output and the service manual does not show section 5, the R.F. out section!
I took a photo of a PM 5509 running three patterns at the same time. I will TRY to upload. It is running checker board, cross hatch, and circle.
