Motorola ts907 low hv

[Yamamaya42]

"So if this is only drawing 550ma then the diodes should not be getting hot not warm but hot. Another mystery."

This is within the norm range.

These diode are 57 years old after all, and after getting hammered each and every time the set is turned on and the caps charge up, it would not be any surprise that a pair on new ones would help quite a bit, and the price dif between 1a & 2a is almost nothing.

[timmy]

Originally Posted by Yamamaya42

"So if this is only drawing 550ma then the diodes should not be getting hot not warm but hot. Another mystery."

This is within the norm range.

These diode are 57 years old after all, and after getting hammered each and every time the set is turned on and the caps charge up, it would not be any surprise that a pair on new ones would help quite a bit, and the price dif between 1a & 2a is almost nothing.

Yes that’s true I will have to end up changing them if I could only get video it is so close I could taste it there is a coil right at the antenna input maybe someone turned it so I’m going to turn in and out carefully watching exactly how many turns if no better I’ll put it back exactly where it was because it almost seems like a very weak input signal. Nothing to lose at this point.

[jr_tech]

Are c1, c2 and c3 staying cool?

jr

[timmy]

Originally Posted by jr_tech

Are c1, c2 and c3 staying cool?

jr

Yes but one is in the area of the 550ohm resistor it gets hot in that corner.

[Yamamaya42]

Originally Posted by timmy

Yes but one is in the area of the 550ohm resistor it gets hot in that corner.

the 20w 550 gets hot enough to cook a steak in a decent amount of time!