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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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I am repairing Thermo Orion 525A pH-meter with a VF-Display.
It looks like there is a short in the DC-DC converter module. The module is made by CET Technologies, model CT-1058. I am unable to find info about it on their website and they do not reply to my e-mails asking for help... It has 7 pins, two for +5V/GND input, two for the 45V output and three strange pins in the middle showing about 6V on a working unit but when measured with ohm-meter they show short (transformer taps?). I am looking for ideas of buying a replacement DC/DC module or to make something from scratch which will work similar. Please advise. |
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