08-22-2006, 10:05 AM
If you look at the base of your 5X4 you will see where there was a guide at one place on the broken-off center; this corresponds to the space between pins 1 and 8. The socket will also have a place for this guide and from there you can insert the tube. You should really get rid of that tube with broken base as soon as you locate a replacement; they aren't rare at all.
Restoring one of these old radios is not like building a HeathKit where all the caps are new and fresh. You MUST replace (not shunt or parallel) ALL of the electrolytic caps and if you want to use the radio, you must replace the caps hidden in the tar filled black blocks with terminals on them (when you get to that point, ask for assistance; it's not difficult, but it takes practice). You will find lots of bad resistors too, especially those above 100K. A 20% error is the accepted tolerance.
Restoring one of these old radios is not like building a HeathKit where all the caps are new and fresh. You MUST replace (not shunt or parallel) ALL of the electrolytic caps and if you want to use the radio, you must replace the caps hidden in the tar filled black blocks with terminals on them (when you get to that point, ask for assistance; it's not difficult, but it takes practice). You will find lots of bad resistors too, especially those above 100K. A 20% error is the accepted tolerance.
Pete AI2V
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