Thank you, I will get a couple of them ordered also.
Tridaddy
Member
Last Activity: 02-27-2015, 11:52 PM
Joined: 02-22-2015
Location: Denver, CO
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Re: Need to canibalize
Thank you, I will get a couple of them ordered also.
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Re: Need to canibalize
Looking up part numbers, I am thinking it is a MOV-14D271K. The blown MOV is 14mm not 10mm. After looking up numbers 14D271K makes sense. Here is the data sheet: [url]http://www.digikey.com/product-detail/en/MOV-14D271K/MOV-14D271K-ND/2799115[/url]
What do you all think?
ToddRe: Need to canibalize<br /> <br />.../2799115[/url]Leave a comment:
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Re: Need to canibalize
I had to go to Digi-key for my parts. It was a one stop shop for everything. I have five fuses, five capacitors, solder removal braid, and a desoldering pump on the way. Momaka, you are correct it is a Chicony power supply, and the more everyone has given me to read, the more excited/determined I am to make it work. From what I can tell and I may be wrong, but power comes into the power supply circuitry through the fuse, MOV, and cap which are in parallel, it looks like it then goes into inductors, I believe they are also in parallel with the afore mentioned...Leave a comment:
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Re: Need to canibalize
I think I am good on the MOV then. It looks like the path was the fuse, MOV, and a capacitor and it took all three. Looking for a place to order the parts now. The first place was out of the fuses.
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Re: Need to canibalize
stj/budm,
Thank you, I have resigned myself to having to wait to get the power supply working. I did have one on order, but now I am committed to fixing this one. I have ordered several fuses, and capacitors. Since I am ordering some components I have ordered a couple extra items to help with replacing the components once they come in, soldering wick, solder suckered some flux.
I do have a concern, which is not knowing what the proper MOV is. Without the old one being burned up, I can not read any writing if it was there in the first p...Leave a comment:
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Re: Need to canibalize
The MOV does connect to the neutral lead. I have to find a square fuse. The markings said T6.3AL/250V
when I do a google search there are all kinds of hits which makes me confused. Is it a 6.3 Amp fuse or a 3amp fuse
I found an MOV which was 10mm and soldered it into place. It was labeled as a GNR 14D214K. The old MOV was to badly damaged to read any writings.Leave a comment:
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Re: Need to canibalize
budm,
Is a MOV and thermistor the same? How do I check the bridge and the MOSFETs? DO they need to be removed from the PCB to be checked?
If all else is good, do I just add a jumper wire where the MOV was?
Thank youLeave a comment:
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Re: Need to canibalize
My first attempt at pictures....Leave a comment:
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Re: Need to canibalize
Goontron, thanks for the assist.
How do I build a dim bulb tester, and what is it used for?
I will pull the fuse today to check it. I will be looking for a thermistor amongst pwr supplies from old computers and any other electronics I can get my hands on. It would be so much easier if I were home. I could get the components quickly and have access to a real soldering station.Leave a comment:
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Need to canibalize
I have a 110v power supply which was plugged into a 220 source.
When I opened the brick up, the first thing I noticed was a piece of charcoal which used to be a thermistor. From what I can tell following the PCB traces, line comes in and goes into F1 which is labeled T6.3A250V then proceeds into the second component labeled VAR1 which when I removed the component had a symbol for a thermistor under it. The only marking on the thermistor is 125deg C.
I have not removed F1 to check impedance yet.
My questions are:
1. What are the chances that the thermistor blowing... -
Re: New Members - please post your introductions here
Hi,
I'm Todd and I am an electronics tech with a formal education care of Uncle Sam and the U.S. Navy. I was one of the last classes which received component level repair training; everything is now board level or module level. It has been some time since I have had to really trouble shoot a circuit, so I am a bit rusty.
I came upon this site while trying to figure out how to repair a power supply by using parts which I have available to me. I am deployed right now so I do not have access to a parts...Leave a comment:
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