Philco 38-12 radio

[jr_tech]

Good! so what was wrong with the 190k plate resistor? .... you measired a reasonable voltage on the plate of the 75 tube, 97 volts, IIRC, odd that it didn't work.

jr

[timmy]

Originally Posted by jr_tech

Good! so what was wrong with the 190k plate resistor? .... you measired a reasonable voltage on the plate of the 75 tube, 97 volts, IIRC, odd that it didn't work.

jr

i don't know but that resistor measured 186k but it was several to make up the value but for some reason it didn't work. I also changed the 490k that I put in since it was a 5 watt and it calls for a half watt so I now have a 470 half watt in there now. 5 watt was over kill.

[jr_tech]

What does the 490k/5 watt measure?

jr

[timmy]

Originally Posted by jr_tech

What does the 490k/5 watt measure?

jr

The 5 watt resistor I put in was a power resistor but it is a 470k and that's what it measured yet it was not right. Mystery this 470 5 watt was the replacement for the 490k since the old resistor that was in there was at 1.2meg , to high.