We have a Dynex DS2 automated ELISA system (Magellan Technologies) that we typically use 1-2x weekly for the past 8-9 years. It is in impeccable condition (all PMs done routinely). However, last week the technician reported that the unit would not power on. The unit was moved to a new outlet and we also tried an alternate cord. Nothing.
It's pretty much sealed shut from what I can tell. Dynex wants a pretty large open PO for the service call, as we are no longer under a service contract.
While I respect their expertise, I'm trying to see if it's something simple we can fix on our own before spending a ton of money on what might turn out to be a simple fix.
Any advice would be greatly appreciated!
Melissa, is the outlet ok? Then, first things to check are the cable/case socket, fuses and mains switches. Find someone who is tech savvy and experienced in checking mains powered gear if you don't have a suitable in house technician at hands or can't do it yourself. Then check all connectors, maybe remove them one by one and look for corrosion, broken wires etc. If all that is ok, then test the power supply: is there secondary voltage? Are the electrolytic capacitors ok (any bulging / leakiness)?
If that still does not do the job, it gets difficult, but not impossible. But you need somebody who can guess by looking how the circuit works (schematics have become rare nowadays) and how to assess its functionality.
Dr. Schechinger,
Thank you for the response! Yes, I tried changing outlets (even assuring that the other outlet was on a completely different circuit) and I have also tried changing the main power cable.
There is a main power switch on the back of the unit (this is different than the on/off button used routinely which is on the front of the unit). This power switch is lighted when the unit is plugged in. Despite the unit not responding to the power button on the front face, this main power switch does light up when the unit is plugged in (even now). So, power must be getting to the unit, it's just not responding to the front power button. I have tried resetting this main power switch as well, to no avail.
Accessing the wires, etc is a daunting task. There is no back/side panel that is easily removed. The outer housing has screws, but upon removal the housing doesn't budge (they've done a good job of making it difficult to "get in" unless you know the secret). I thought perhaps someone might be able to talk me through this if they had in fact taken on the challenge themselves.
I'm usually pretty good at taking things apart, figuring out what's wrong and being able to fix it & re-assemble (with few "extra parts" remaining, haha) - but I must admit that this instrument intimidates me.
Thank you again for your time and input.
Cheers,
Melissa
Melissa, as the fault appeared after you have moved the reader, I don't think it's a serious problem. I suspect something rather mechanical (defective switch, loose cable and alike). If you're afraid of going into the cables etc. (there is some risk of becoming electrocuted or destroying the machine), then better get someone who is familiar with "hacking" such kind of equipment.
Good luck!
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