i dont recall seeing anything about finding bad solder joints aside from just looking, but for the possible newbie wanting to know the best way or the easy to find these hidden problems this may help. this is to do with 40+ year old tvs or maybe anything with tubes, what i learned is that anything that sits high on the circuit board like caps,resistors or maybe a choke that is near or just around a tube will for sure be a bad joint even though the solder looks good just put one finger on the component solder side and the other side rock the component from side to side and you will feel it move then solder it. i say this because if you think how many times a tech was in the set changing tubes over a 40-50 year time frame well then reaching in for this work its hard to avoid bumping into the high sitting components.im sure many of you guys out there have also bumped into things to get a tube out.so if you were to take lets say a cap and rock it a few times in these old sets then you know it will have to be soldered again because it dont take much to break the solder bond.just alittle helpful hint for some if it would help.
06-24-2011, 10:08 AM
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