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

[Seventh Prince]

Hi,

Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.

Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.

Thanks.

[ridz]

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need
to solder the wire to the glass fuse in order for further
soldering to the PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire
but PSU will blow out fuse each time. AC voltage is 240V.

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.

[mike]

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.
Thanks.

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
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[dave chiew]

Post by mike

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.
Thanks.

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

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

-dave chiew (hehehe)

[Kerry]

"dave chiew" <***@noplace.like.home> wrote in message news:***@4ax.com...
:
: The Dude: "Adoi! These people talk about soldering iron tak habis-
: habis!"
:
: -dave chiew (hehehe)

Bitter memory eh! Dave......

[adchin]

Post by Kerry
Bitter memory eh! Dave......

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

[Parse System Technology]

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.

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.
Thanks.

[kip]

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...

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the pcb solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.
Thanks.

[Andy Cuffe]

Post by kip
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...

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

***@psu.edu <-- Use this address until 12/31/2005

***@gmail.com <-- Use this address after 12/31/2005

[七少爷Seventh Prince]

Post by Seventh Prince
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.

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.

[七少爷Seventh Prince]

Oh, I did not see the 2A rating. Sorry. This is an internal fuse which
means that something is not right with the current limiter circuit.

2A 250V relay type fuse which is expensive (RM1 each). The advise from
my superior is that the rectifier is faulty.

What type of PSU is it, any id? Maybe there is a schematic for it.

There's a marking "TPG40/65H" . It is a typical DC12V PSU. Newer PSU
models are made by Meanwell.

And, could I use 470 Ohm preset in place of original 500 Ohm ones?

Thanks

[七少爷Seventh Prince]

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.

[OLD pc user]

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-

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.

[James Sweet]

Post by 七少爷Seventh Prince
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.

It's easy enough to do, but if the fuse blew there's something else wrong
you'll have to fix first.

[gb]

Post by Seventh Prince
Hi,
Any advise for How to solder live 2A glass fuse to Power supply board
in exchange for the PCB solder 2A fuse. And what type of power wire
should be used to connect the glass fuse to the PSU board? I need to
solder the wire to the glass fuse in order for further soldering to the
PSU board.
Have tried with thin insulated signal wire and ceramic fuse wire but
PSU will blow out fuse each time. AC voltage is 240V.
Thanks.

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