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Messages - ohmy!!

#46
So I need to replace both of those power resistors there, the 100ohm 5W 10% above the sockets?
#47
Here's a picture of the circuit board where the two plugs are and the resistors.



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#48
Tubes and Hybrids / Peavey Heritage VTX ..uh oh..
July 08, 2010, 04:28:32 PM
Hey guys, I'm having an issue with my VTX.  It was working fine until the other day.  It started sounding really bad and I had looked at the tubes and one of them was out completely.  So, naturally, I got a new set of the same tubes that were in there and have been in there for a few years (Sovtek 6L6WXT+).  I had plugged them in and started it up, after about 2-3 minutes of it being on it makes a loud pop and then nothing but loud humming.  I check the tubes, 2 of the tubes are glowing insanely bright red.  I flip it off, unplug it and check the fuses later.  One of the fuses had gone, I went ahead and replaced all of them, filter caps look fine.  So I figured maybe those two tubes were bad, I went through and swapped tubes between each plug and the same two plugs cause the tubes to get real hot and lots of loud humming going on.  So I unplug those 2 tubes, turn it on and it's working, no humming.  Any tubes I plug into those 2 spots get red hot and cause it to hum very loud.  I'm not sure if there's a bad resistor anywhere or what's going on. Any help would be appreciated.  I snapped off a picture for you guys to see it.



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