Just got in a huge HP color laser printer that was hit with a surge. I immedietly found a blown fuse in the power supply. Its a Hollyland 51MS (Medium slow blow) 125V/8A fuse. Its nominal melting I2T is 167. Blow times are 100%: 4hrs min., 135% 1hr max, 200%, 20sec. max. Looking on digikey, the closest I can find is a littlefuse 232 series. The 232 series has a melting I2T of 182, the blow times are the same at 100% and 135%, but 200% is 2.25sec max. Should that be close enough?
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Re: Best replacement fuse
8a slowblow 125v minimum is all you need to be concerned with
make sure it's ceramic NOT glass though -
Re: Best replacement fuse
Did you test the components downstream of the fuse? One or more may be shorted.Comment
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Re: Best replacement fuse
The original fuse wasn't ceramic, according to the hollyland spec of the 51MS.Comment
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Re: Best replacement fuse
maybe, but if something shorts out and blows a glass fuse hard, the glass can shatter.
you really should use ceramics on mains!Comment
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Re: Best replacement fuse
'Just got in a huge HP color laser printer that was hit with a surge.' Is the MOV (surge protector device) which is connected after the main fuse OK?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
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TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Best replacement fuse
MOVs get "used up". When they do finally fail, they tend to fail closed circuit and result in flames.
If it did sustain a big strike, I'd probably replace it, but I'm overly cautious.Comment
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I bought a dead motherboard, and connected it to this PSU,
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The fuse was blowen, and the top was blowen off of a TNY276PN chip
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So i checked the marking on the PCB thinking that that would tell me,
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So should i get a fast blow fuse, or should... -
Hi,
I recently picked up a used Matsui 175S microwave that was powering up (starts, turntable rotates) but not heating. From looking online the most likely culprit was the fuse, but unfortunately in this one the fuse had heated up and fused with the (badly designed) fuse holder and couldn't be removed. I guess this might indicate further issues beyond the fuse itself but at this stage I just want to replace the fuse and see how I go from there.
Anyway since I couldn't get out the fuse itself the easiest fix was to replace the fuse holder assembly that runs between the... -
Hi,
I have a GIGABYTE Windforce 980TI with a blown fuse. I have already found the root cause for the fuse blowing.
I need help getting a replacement fuse - I'm fine with waiting some time for some cheap ones from China.
The fuse says 10A on it. And I'm not sure what package size it is exactly. Also, how do I know if it is a fast or slow fuse?
...04-11-2022, 09:01 AM -
Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
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There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hello,
I need to replace a fuse on one of the graphics cards I am working on. It is a 1206 SMD fuse, white in color and has a "10" written in a blue rectangle on it.
How do I find a suitable replacement? What is the general rule to identifying fuses' parameters? I found something in an eshop near me (see photo) but am very hesitant to use this as a replacement....
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