Have been trying to fix some dodgy group modules on a little d&r console and haven't had any luck going through the normal Cap / ic ch we checks and changes.
Then I noticed that, there is a break in the board (seemingly by design) between the left and right only Jack's. On the one working strip these are linked by solder bridges. On the three dead strips these bridges aren't making contact.
See https://www.dropbox.com/s/p42t4p2orpopf ... 2.jpg?dl=0
Any ideas how to fix this?
I am guessing I'll have to either excise the trace and solder a jumper or drill the boards to achieve the same end.
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Help with odd pcb problem
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Help with odd pcb problem
Dave Carter
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Re: Help with odd pcb problem
Unless I am misunderstanding... which is a fair chance
I would just trim some component leads (resistor) and bridge it... seems weird though... having two seperate PCBs joined only by solder bridges...
Do you have a working group module, that you can look at and check its the same?
cheers
Wiz
I would just trim some component leads (resistor) and bridge it... seems weird though... having two seperate PCBs joined only by solder bridges...
Do you have a working group module, that you can look at and check its the same?
cheers
Wiz
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Re: Help with odd pcb problem
This is the working module.
https://www.dropbox.com/s/vlo34m9i71j4e ... 8.jpg?dl=0
It is weird...
I guess the problem is I can't see how whoever did this managed to get the solder to make a connection with the track. My skills aren't up to fixing it that way.
So - expose the track and carefully solder a jumper in place?
https://www.dropbox.com/s/vlo34m9i71j4e ... 8.jpg?dl=0
It is weird...
I guess the problem is I can't see how whoever did this managed to get the solder to make a connection with the track. My skills aren't up to fixing it that way.
So - expose the track and carefully solder a jumper in place?
Dave Carter
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Re: Help with odd pcb problem
Looking at the pcb overlay of the schematics it does seem the strip was designed this way.
https://www.dropbox.com/s/fb1qlrv5vwa5n ... s.jpg?dl=0
I can't for the life of me figure out why.
https://www.dropbox.com/s/fb1qlrv5vwa5n ... s.jpg?dl=0
I can't for the life of me figure out why.
Dave Carter
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Re: Help with odd pcb problem
It doesn't look like you need to expose the track - there are seven pairs of solder pads already there ready to be linked.
As Wiz says, trimmed off resistor leads make for great bridges in this situation - they will create a stronger link than solder. I bend the leads into a U shape, with the length of the bottom of the U being the distance between the pads. You can then solder it in place holding the lead with pliers, and trim the uprights.
As Wiz says, trimmed off resistor leads make for great bridges in this situation - they will create a stronger link than solder. I bend the leads into a U shape, with the length of the bottom of the U being the distance between the pads. You can then solder it in place holding the lead with pliers, and trim the uprights.
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Re: Help with odd pcb problem
solder isn't sticking to the pads - I'll give them a really good clean and fingers crossed that might work.
Dave Carter
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