- Mar 3, 2012
This is very interesting I like a challenge . I tested mine and both tested okay at 4.7M ohm, By removing the fuses you can test better in circuit. I agree the current shouldnt have affected them . But I have seen switch on surge take out resistors Most of the resistors I have come across especially in radio front ends go high. Those two resistors seem to be the only kind of that type[unless somebody has better eyesight than me] with capped ends. Studies of different types of caps on resistors were carried out in the UK in EW mag using special micro-ohm equipment and some were found to have a small increase in resistance over a period . The longer the higher the resistance especially high voltages employed .So the type of metal that is used for the caps[at each end] plays a part in the reliability of the resistor . I dont have the actual mag to hand but I have a good memory.It could be a combination of things that bring it about. I take it they are 500V types?