UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - My first antique TV-Olympic Model 755-need help.

ct92404 · 22nd Oct 2017, 12:09 am

Lawrence, I didn't know that. I'll check the voltages again with the dvd player disconnected. Still, I think there is something definitely wrong there. Other than the problem areas I mentioned, the voltages were about right and fairly stable.

I've always been told that when resistors fail, they usually have higher resistance and they don't go lower or short out (or at least it's extremely rare). But I'm wondering if one of the resistors went bad and could cause a short giving a direct pathway for the 275 plate voltage to other parts of the tube? I don't have the diagram with me at the moment, but I remember that a 275 v pin is connected to another pin THROUGH a resistor.

- Chris

22nd Oct 2017, 12:09 am	#67
ct92404 Pentode Join Date: Sep 2015 Location: San Bernardino, California, USA. Posts: 101	Re: My first antique TV-Olympic Model 755-need help. Lawrence, I didn't know that. I'll check the voltages again with the dvd player disconnected. Still, I think there is something definitely wrong there. Other than the problem areas I mentioned, the voltages were about right and fairly stable. I've always been told that when resistors fail, they usually have higher resistance and they don't go lower or short out (or at least it's extremely rare). But I'm wondering if one of the resistors went bad and could cause a short giving a direct pathway for the 275 plate voltage to other parts of the tube? I don't have the diagram with me at the moment, but I remember that a 275 v pin is connected to another pin THROUGH a resistor. - Chris