BK Precision programmable PFC DC supply VSP 12010 120V/10A Power Supply - Page 1
Forum section: electronics / repair

author: Vietk123
author_rank: Contributor
timestamp: August 17, 2016, 05:42:16 am
content: I just recently bought a BK Precision programmable PFC DC supply VSP 12010 120V/10A power supply for $40. I went home and try it and only the fan turn on but no light on the led or anywhere except the power button. I figure it might not work when i bought it. My question is are these unit easy to repair. I am planning on opening it and take a look around. What do i have to look out for as far as safety and voltage ? Is this unit worth repairing and can i use it as a power supply for electronic repair? Please help I am a total newbie and would love to learn electronic repair. Thanks in advanced

author: Zucca
author_rank: Unknown
timestamp: August 17, 2016, 08:57:59 am
content: Do you want to do repair in the future? This will be a nice experience, but it is not the best "first step" for a beginner...You are dealing with mains and 120VDC and it is not a simple circuit I assume...Think twice, triple measure everything, and use the rule "always one hand in your pocket"... Anyway it is all up to you, not to a EEVBlog at the end of the day. It´s your skin not mine...If you are too scared sell it here at 50$, better to have 10$ in your pocket than to have a bad or dangerous experience.Anyway open it up and take some pictures... the EE dragons here will give you some further advices..

author: Andy Watson
author_rank: Super Contributor
timestamp: August 17, 2016, 09:28:06 am
content: Have you downloaded the manual and checked that the unit is configured for local operation? The unit appears to have a remote on/off facility - if you're lucky it might just need to be changed to local operation.And be careful!

author: Vietk123
author_rank: Contributor
timestamp: August 17, 2016, 03:29:06 pm
content: Thanks for the quick reply. I am collecting tools to do electronic repair in the future. How do beginners start out to learn electronic? When I have some free time I will take it apart and take all the picture I can. I am guessing this is not a good unit for maybe cell phone and laptop logic board testing if I am able to get it fix? Can someone point me as a beginning to how to start basic beginner electronic repair? Please help point me in the right direction. I have download the manual but it all looks new to me.

author: Andy Watson
author_rank: Super Contributor
timestamp: August 17, 2016, 04:41:04 pm
content: Quote from: Vietk123 on August 17, 2016, 03:29:06 pmNo it's not a good unit for low-voltage work. With 120V available at 10A any mistake will zap whatever is connected - including you. This is potentially a letahal power supply - treat it with care and respect. It would probably be better to flip it on ebay and buy a lower votlage unit with the profits.If you can follow the manual to check the configuration you might be able to get it full operation - I would strongly advise against doing any further fault-finding - DONT MESS WITH IT.

author: Vietk123
author_rank: Contributor
timestamp: August 17, 2016, 05:12:21 pm
content: Yeah i think i will try to get it working again and sell it and buy a new unit. what do u guys recommend as a reliable and affordable unit for smart phone and laptop logic board testing. I did manage to get it open real fast and take pictures and put it back together right away.

author: Vietk123
author_rank: Contributor
timestamp: August 17, 2016, 05:24:27 pm
content: Here is more pictures. Hopefully anyone can help me get it working again but I am not gonna touch inside again. Thanks

author: jitter
author_rank: Frequent Contributor
timestamp: August 17, 2016, 07:43:16 pm
content: It doesn't look like a TDK-Lambda job to me, otherwise I might have said it was definitely worth to repair, now I'm not that sure.Repairing this is not really suitable for a beginner. Sell it on or stash it until you've gained more experience with repairs.

author: Vietk123
author_rank: Contributor
timestamp: August 17, 2016, 09:14:10 pm
content: Yeah I wanted to once again thanks everyone for the great precaution and input. It looks like it is set to Local Operation in the back. I might just get rid of it and save myself the trouble for now. What kinda unit will I need for smart phone and laptops repair? What voltage and Amp should i look for?

author: Vgkid
author_rank: Super Contributor
timestamp: August 17, 2016, 10:42:43 pm
content: Look into any writing on the board for clues on a manufacturer/model designation. Kepco possibly.it has rubycons in it, so it cant be to bad.