Can't Melt Solder on Power Board

[barryra]

I am changing a bunch of capacitors on a power board in my 47pfl7403d/f7 & cannot budge any solder. I've tried adding new solder with no luck. My Hako iron is at 750. Thanks for any help.

[arenat]

Re: Can't Melt Solder on Power Board

A small tip don´t have enough power to heat a big surface . Do you have a heat gun ? if so you must heat the whole area before using the iron . Then put some new lead solder to make it easier .

[Moreno83]

Re: Can't Melt Solder on Power Board

Dont solder with a heatgun , you might destroy other parts.

You need a good solder iron. 85W solder iron is more then enough to desolder capacitors.
You probably need a bigger tip otherwise the board will take all the heat and the solder wont melt....

[ivtec]

Re: Can't Melt Solder on Power Board

I am changing a bunch of capacitors on a power board in my 47pfl7403d/f7 & cannot budge any solder. I've tried adding new solder with no luck. My Hako iron is at 750. Thanks for any help.

I'd suggest, first add more solder to cap legs then use sucker pump .

[arenat]

Re: Can't Melt Solder on Power Board

Dont solder with a heatgun , you might destroy other parts.
.

heat the whole area BEFORE using the iron

[petehall347]

Re: Can't Melt Solder on Power Board

try adding flux . what caps are they ? like are they through hole ?
fit larger tip . 2 or 3mm i think .

[barryra]

Re: Can't Melt Solder on Power Board

I got the solder to melt.... I needed to reset the Hako unit & was fine. Thanks for the replies.