Quote:
Originally Posted by David Roper
In sets with hollow-state rectifiers Motorola liked a big fat tranny with the 5U4 on top, which looks pretty cool too.
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Hmmm. I never cared for the idea of having the 5U4 LV rectifier on top of the power transformer. It may have looked cool and may have worked just as well as the chassis-mounted 5U4s, but there was a drawback: if the rectifier socket went bad (cracked, bad contacts, etc.) you'd have to replace the entire transformer, even if the latter was still good.
As hot as those 5U4s got in the old sets, I don't think the socket lasted all that long either. Also, the few sets I've seen with the transformer-mounted 5U4 socket (pictures only; never saw one up close) only had one 5U4. I have yet to see a TV with
two 5U4 sockets atop the transformer. I know some sets used two rectifiers in the low-voltage supply, but the tubes were almost always in chassis-mounted sockets.