Re: OT: Vortex issue

[van Sinn <vansinn@post.cybercity.dk>]

cnovey@gmail.com wrote:
> Thanks a lot- is it possible to test these components while they are 
>installed or do you just start replacing until you solve it? Or remove 
>them, test, repeat? If you could lay some more info on me I am an eager 
>sponge.
> Regards,
> Clifford
> Sent via soup cans and string.


As mentioned in another post, you generally can't reliably measure 
individual components in an assembly, only certain operational conditions.

Some repair hints:
If you need to replace the opamp, first obtain a new one plus a socket.
Without skills and the right tools for desoldering integrated circuits, 
don't try it; chances are you'll rip out the via's, i.e. the metal 
'tubes' routed through the circuit board, connecting the leads in the 
various layers.
Instead, using a slim cutter, cut the leads off the IC, then desolder 
each remaining pin.  Feed the IC to the trash bin.
Clean the solder hole using twisted desolder braid. Don't use a solder 
sucker, at least not a large one, unless you've trained a bit, as some 
of those can actually have quite a suck, potentially ripping-out an 
overheated via (because too much heat was applied).
Now insert and solder the socket.  Note the orientation mark, so you 
afterwards plug the IC/opmap in correctly oriented ;)

Best of luck, mate


-- 
rgds,
van Sinn