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Posted: 6/25/2016 3:15:59 PM EDT
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I need to replace these two resistors on a Varo 9823e aka pvs-502.
Varo built these in Texas, they had Photonis DE 1st gen, lastest and final design tube. The design is similar to the aeg-1211, power wise, clarity. The 502's had two resistors, a potentiator for the brightness of the projected reticle(like a PVS-4), and a two post(+ & -) on/off toggle. Based on these pictures, which were the best I could do, can anyone id the resistor values or suggest a potentiometer? So I can head to Mouser and get my resistors and pot, I have an on/off switch. Here are pics: Pics |
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Try this link for photos.
And OP, try this link to compute your resistor values. EDIT: Then again, maybe not. I'm playing around with it and the resistors in the picture don't seem to quite follow the usual color scheme. IE, there's no option for an orange band in the 5th position, or if I have it backwards, gold for the second band. |
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Why do you think that you need to replace those resistors? Is it because the solution for the symptoms (of the problems that you are having with the device) is usually to replace those resistors (and the potentiometer, too?), or something else?
You could try measuring the resistance values (if they're not 'cooked' or open) and see how they compare with the presumptive decoded color code value. Based on this color code guide (which lists orange as a valid color for the fifth/tolerance band): https://www.eeweb.com/toolbox/5-band-resistor-calculator It would appear that the resistor that starts with two red bands at the left is 22.1 ohms, 3% tolerance. (Who even knew that you could get 3% tolerance resistors?) If the second resistor's bands (first 3 out of 4) are green/brown/red, then that might be 5100 ohms. |
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