UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Argus25 · 7th Oct 2019, 2:44 pm

I know what you are getting at and it is a difficult notion to modify a circuit to be far away from what it was as new because part of the charm of these old sets is their circuit quirks.
For the TV22 I would go for a compromise, just leave it there as it is but tack a resistor across the existing 100k and tack a resistor across the diode(it may not be necessary to disconnect the diode from its solder tags) to give the best sync pulse form at the grid and best interlace you can get with the existing capacitors and then what amounts to a 2 stage filter, then a purist could simply remove them one day to restore the original circuit.

7th Oct 2019, 2:44 pm	#138
Argus25 No Longer a Member Join Date: Oct 2016 Location: Maroochydore, Queensland, Australia. Posts: 2,679	Re: Bush TV22 with TC184 B3 converter. I know what you are getting at and it is a difficult notion to modify a circuit to be far away from what it was as new because part of the charm of these old sets is their circuit quirks. For the TV22 I would go for a compromise, just leave it there as it is but tack a resistor across the existing 100k and tack a resistor across the diode(it may not be necessary to disconnect the diode from its solder tags) to give the best sync pulse form at the grid and best interlace you can get with the existing capacitors and then what amounts to a 2 stage filter, then a purist could simply remove them one day to restore the original circuit.