Good luck. I seem to remember someone sketching the schematic of these
attenuators, where this resistor was in-line with the signal. Presumably
it's for dampening and/or a fusible cutout, and so the power rating
shouldn't be a problem. I don't think the 380 or the 420 have a 50Ohm
coupling option?
On Fri, Apr 30, 2021 at 3:29 PM Richard Peterson <saaber1@...>
wrote:
Thanks Siggi. I found that article and it inspired me to dig into my
repair. Since Mark used an 0603 SMD resistor I assume the power
requirement is pretty low but i thought i'd ask others. I can probably
squeeze a 1206 in there, but it would be much easier scrape away the
remains of the old resistor and solder in a 1/4 watt resistor (or two in
series). I was mostly concerned about the power rating of the original
part, but given the size, I guess it's pretty low. I'll try the metal film
resistors, matched to the value of the resistor in CH2 and see what
happens. Hopefully nothing on the underside of the board is also blown.
I'll post my results . . .
