How to solder live 2A glass fuse to Power supply board

If the 2A rating is correct and the fuse keep blowing every time, then I suspect that the PSU board is faulty. I suggest you chuck the PSU and get a new one.

soldering on fuses is unreliable. Put in a socket of some kind. But sounds like you need to fix the reason it's blowing. Shorted diode is typical cause. mike

--
Return address is VALID but some sites block emails
with links.  Delete this sig when replying.
.
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
Wanted 12" LCD for Compaq Armada 7770MT.
Bunch of stuff For Sale and Wanted at the link below.
MAKE THE OBVIOUS CHANGES TO THE LINK
http://www.geocities.com/SiliconValley/Monitor/4710/

The Dude: "Adoi! These people talk about soldering iron tak habis- habis!"

-dave chiew (hehehe)

1.0 Solder a fuse holder on PCB board instead of soldering fuse directly on the board. 2.0 Then place your 2A fuse into the fuse holder, switch on the power. 3.0 If the fuse blow, then replace another fuse while the power switch is off. Then you switch on the power.

If the fuse is blow again, kindly repeat 3.0.

If you have repeated the step 3.0 for more than 10 times, perhaps you can email me, I will sell you the fuse at dealer price, a packet of 50 units fuse will cost you RM 15.00. Then you can repeat the step 3.0 procedure.

Well if the correct fuse value blows then its obvious that the PS has problems. If you need that type why not just buy fuses with pigtails...

Possibly it is supposed to be SB?

Tom

I find that filing the ends of the fuse provides a surface that will take solder quickly enough so that you don't damage the fuse. Andy Cuffe

snipped-for-privacy@psu.edu

Bitter memory eh! Dave......

Yes. Purchase the correct type of pigtail wire-equipped replacement fuse and use it.

Failing that, you could try installing a separate fuseholder or circuit breaker.

If the fuse keeps blowing, then it's most likely a problem with the power supply itself as opposed to a problem with the fuse installation.

--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR, 
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"

He's not listening....

jak

One way to find out might just be to solder in a wire jumper.

greg

I believe it wasn't Dave's nose that got pierced with the iron, thought it was the postman

...with a fire extinguisher at the ready...

Tom

Could it be the rectifier is faulty?

I know now that the problem is not with the thin insulated signal wire. Have tried with other wires and the fuse keeps blowing.

Could I use any wires for soldering fuses? Thanks.

Am planning to solder fuse holder via wires to the PSU board as the layout of the board for the original 2A PCB solderable fuse is smaller than typical glass fuse.

I think you have been told before but you did not listen..

If the fuse blows again the problem is somewhere else in your device. If the fuse blows again the problem is somewhere else in your device.

The wire you use to connect the fuse will NOT make it blow and will be fine for the job if the fuse blows and the wire does not burn. Caution: If this fuse is at 240volts then the wires must be clear of anything else or properly insulated.

If the fuse blows again the problem is somewhere else in your device or you are using the wrong fuse.

The power supply may very likely need a SloBlo fuse as the inrush current could be as high as hundreds of amps for a short time.

You really have not given anyone much of a chance of helping you because you are stuck on the connecting wire problem.

--
John G

Wot's Your Real Problem?

HELL YES

My advice is find out why the fuse keeps blowing first then replace with the original one. Soldering iron is used for the nose (somebody's) only hehe.

-old PC User-

Most good radio/TV shops have this fuse (pigtail version) in stock for TV chassis. An ordinary 5x20 mm or 3AG holder can be substitutes IF the VOLTAGE ratings of the holder are greater than the circuit's voltage.

gb