Author Topic: [SOLVED] UNI-T UTD2052CEL Oscilloscope SMPS repair  (Read 11422 times)

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Offline tautech

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Re: UNI-T UTD2052CEL Oscilloscope Power Supply
« Reply #50 on: July 29, 2016, 09:11:10 am »
Nice one.  :-+
We all learn a little bit more each time we have a win.  ;D
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Offline retiredcaps

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Re: UNI-T UTD2052CEL Oscilloscope Power Supply
« Reply #51 on: July 30, 2016, 02:10:31 am »
The good thing about this power supply is that it is relatively all laid out pretty flat and easy to repair.  As I mentioned, I mainly work on consumer SMPS like an ATX power supply.  I hate how everything is crammed in their on stand-up daugther boards and everything is impossible to measure safely on the hot side unless you solder jumper wires.

How do you begin to troubleshoot this?

http://images.anandtech.com/galleries/3560/CRM1000_13_575px.JPG

http://www.kitguru.net/wp-content/uploads/2015/06/AS7V08471.jpg
 
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Offline negativ3

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Re: UNI-T UTD2052CEL Oscilloscope Power Supply
« Reply #52 on: July 30, 2016, 03:01:23 am »
One last point to consider... when reassembling ANY equipment, make sure the correct screws go back in the correct positions.

I would remove the ATX PSU fully from the metal frame, then begin...
 

Offline SeanB

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Re: UNI-T UTD2052CEL Oscilloscope Power Supply
« Reply #53 on: July 31, 2016, 08:08:12 am »
The good thing about this power supply is that it is relatively all laid out pretty flat and easy to repair.  As I mentioned, I mainly work on consumer SMPS like an ATX power supply.  I hate how everything is crammed in their on stand-up daugther boards and everything is impossible to measure safely on the hot side unless you solder jumper wires.

How do you begin to troubleshoot this?

http://images.anandtech.com/galleries/3560/CRM1000_13_575px.JPG

http://www.kitguru.net/wp-content/uploads/2015/06/AS7V08471.jpg

Just like the Dell power supply I have that blew up. A replacement power supply was more than the book value of this Optiplex ( 2 years old), and was in any case a "refurbished" power supply. 250G hard drive is going in as an upgrade of the replacement "spare" computer, as the existing 80G drive ( Yes, I know, it filled up with Windows updates, till it had zero free space, but still actually boots and runs Outlook, which is the only thing used. I need more space to actually log in with a domain admin to prune it down, but currently just use a live Opensuse disk to mount and prune it down) is full.

Something inside blew up and let the magic smoke out, but as this is shoehorned into a tiny box, and seemingly is assembled by elves and hotsnot, it is really hard to troubleshoot. Plus is the detonation did not kill the HDD, but the motherboard uses that wonderful Dell tiny and non standard connector, so I might just use a regular PSU and frankenstein the connector, though it looks like it will be scrap metal "real soon", and I will use the CPU, laptop DVDRW drive and ram elsewhere.
 


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