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| Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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Thread Tools |
5th Aug 2020, 4:41 pm
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#1 |
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Pentode
Join Date: Mar 2020
Location: Bodmin, Cornwall, UK.
Posts: 212
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Anachem Origo psu trip problem
I have been unable to find any user manual and circuit diagram for this PSU.
It switches on OK but is stuck in trip mode. There is a damaged resistor which can be seen in the attached photos (no value markings on it)which may well be causing the problem. Is there any way of working out the value of the resistor or will I just have to dump the PSU in a skip. |
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5th Aug 2020, 6:28 pm
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#2 |
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Octode
Join Date: Jan 2012
Location: Wimbledon, London, UK.
Posts: 1,465
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Re: Anachem Origo psu trip problem
Is this device for Gel Electrophoresis, by any chance? Why not contact Anachem?
Colin. |
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5th Aug 2020, 7:37 pm
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#3 |
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Pentode
Join Date: Mar 2020
Location: Bodmin, Cornwall, UK.
Posts: 212
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Re: Anachem Origo psu trip problem
Have tried contacting Anachem but have had no response. Do not know what Gel Electrophoresis is.
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5th Aug 2020, 8:46 pm
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#4 |
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Nonode
Join Date: Dec 2012
Location: Kirk Michael, Isle of Man
Posts: 2,350
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Re: Anachem Origo psu trip problem
Is that a blown resistor? It looks more like a porcelain fuse to me. What is the identifier on the circuit. It looks to me as if something nearby or just downstream is short circuited. Do a few resistance measurements. There are usually clues on the board if you read everything that is silk screened.
Les. |
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6th Aug 2020, 7:07 am
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#5 |
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Pentode
Join Date: Mar 2020
Location: Bodmin, Cornwall, UK.
Posts: 212
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Re: Anachem Origo psu trip problem
It is marked as R7 on the circuit board.
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