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I initially thought the axial electrolytic caps in this old Marshall had the band representing the '+' of the cap. It turned out that that particular cap was installed in reverse from the factory,
What triggered me to even think this might be a possibility was that I ran into this a bunch of years ago while rebuilding a JVC 1970's vintage tabletop radio for an older customer, for which the item had great sentimental value.
These were radial caps and the circuit board, like many, was only marked with a band. I went thru & diligently replaced all the radial electrolytic caps and low & behold, it didn't work at all as it had at least made some noise before I replaced them all.
After a closer look, I realized the damn caps had the band indicating the '+'. Crazy stuff. Wish I still had a pic of those caps.
Glen
I initially thought the axial electrolytic caps in this old Marshall had the band representing the '+' of the cap. It turned out that that particular cap was installed in reverse from the factory,
What triggered me to even think this might be a possibility was that I ran into this a bunch of years ago while rebuilding a JVC 1970's vintage tabletop radio for an older customer, for which the item had great sentimental value.
These were radial caps and the circuit board, like many, was only marked with a band. I went thru & diligently replaced all the radial electrolytic caps and low & behold, it didn't work at all as it had at least made some noise before I replaced them all.
After a closer look, I realized the damn caps had the band indicating the '+'. Crazy stuff. Wish I still had a pic of those caps.
Glen
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