I had the same problem with exactly the same resistor and I think it was 2W rated one.
Replaced it with a 5K 3W Dale and didn't have any problems afterwards.
M Fowler wrote:I had left my Tweedle Dee Deluxe at my buddy's guitar store and they smoked it.
I noticed right away on inspection that the 4k7 dropping resistor B+1 is fried maybe that OT went out, haven't had time to check it out further.
Charlie had used the same OT I did and they fried theirs.
M. Fowler well that is a bummer. That resistor is on the screens of the power tubes, so I agree with Martin that it is likely a failing tube. Although I should say that I used a Mercury Magnetics OT in the one that I built after the guy I built it for killed the Magnetic Components OT. I don't think Mercury Magnetics is my favorite sounding OT but they do seem to hold up very well and they have a lifetime warranty. I should also say that the reason I built a replica of the original Dumble Tweedle Dee is that it ran very hot and the owner was nervous about killing the vintage transformers although guys for years have been putting GZ34 rectifiers in their vintage 5E3s(including Patrick at Mercury Magnetics).
CW
you guys are blowing up tweedle dees? you mean that your blowing output tubes and that has led to OT failures and resisters fried? in my 5e3 the gz34 seemed to make the plates glow redder then I was comfortable with... but not fully red plate... so I took out the gz34 and I was less worried about it... shorting tubes and its results can happen in any amp tho
Following the smoke trail with interest here. So, the dropping resistor opened up but OT survived? Have this OT in the Tweedle I plan to keep when finished. Thanks in advance.
Good info.
May revisit mine to see if it may benefit from a swap. Haven't had any problems yet. Built three of these things and all that have them love 'em. Me included. 8^)