[Boatanchors] Multi-Layer PC Board Component Replacement

[Mike-WE0H]

Just make sure the solder is liquid before you pull the leads out of the 
holes. It's real easy. A 3 layer board is a piece of cake. You get 
through this project, the next will be super easy for you. Take some old 
pile-o-crap computer board and pull some IC's off of it to get the 
practice. You'll get the hang of it. Keep at it, then when you are 
pulling them like nothing, go for the repair board. You'll be a pro in 
no time.

Mike
WE0H



Richard  wrote:
> My main concern is the pc traces in the middle of the sandwich (it's
> a 3 layer board). One mis-step and it's into the dustbin with it.
>
> 73, Dick, W1KSZ
>
>   


> -----Original Message-----
>   
>> From: Mike-WE0H 
>>
>> I use a 50w iron with the proper sized tip and heat & pull the cut off 
>> leads out of the holes then desolder the holes. You should be fine. Use 
>> a regular vacuum desolder iron if you can. Just don't apply any pressure 
>> to the board. Use a bit of liquid rosin on the leads before you start 
>> the removal and sucking solder. It should transfer the heat plenty fine 
>> then. You also can take a heatgun and pre-heat the board a bit. Not 
>> screaming hot but warm to the touch. It will desolder real nice that way.
>>
>> Mike
>> WE0H
>>
>>
>>
>> Richard  wrote:
>>     
>>> I have a Spectrum Analyzer that needs a memory chip replaced. Later
>>> versions of this unit have sockets, mine has them soldered in.
>>> My thought was to cut the IC leads as close to the IC as possible,
>>> leaving a little tab that I can solder a socket to. The idea of
>>> removing pins in a multi-layer board does not appeal to me. Too
>>> many chances to ruin it.
>>> What do folks think of my approach ?
>>>
>>> Thanks, Dick, W1KSZ