Quote:
Originally Posted by Tony V
This is a general question that i wanted to ask about. What are the pro and con's of replacing a tube hv rectifier with a solid state one in both a b/w or a color tv set? Is it recommended to unsolder the filament leads to use a solid state one if this were to be a permanent substitution?
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Here's a true story for whatever value it will offer. We had an RCA CTC11, and somewhere around the mid 60s, the picture tube went weak. Dad replaced the original sulfide tube with the later rare earth version and discovered shortly after that it started eating 3A3s every couple of months.
Dad replaced the 3A3 with a plug in SS stick (I believe International Rectifier made them) that the parts store was selling. That lasted a week. Dad got a warranty replacement and tried again, and the second solid state rectifier lasted until 1977 when the second picture tube went weak and the TV was retired.
But, there was no rewiring required with the IR rectifier, so we never removed the filament winding. It also apparently could handle more current than the 3A3 could. After the first failure, there was never an issue with the HV section of the CTC11 again.
John