Thank you for your supportive reply and apologies for my terse response to Qiddel. When I made the measurements it was with the tubes in place, and they did not heat up (did not glow). So I was not surprised to get unreasonable readings, but I was - am - at a loss to know why.
Please forgive me, but I am really quite soured by Quiddel's post. I prefer to resolve this issue somewhere other than this forum.
This completely disqualifies you from working on any tube circuit.
Your arrogance is noted, as is your apparent desire to exclude new-comers from the elite and obviously highly-intellectual arena of electrical assembly. But I accept responsibility for perhaps misdirecting you, as I am assuming my definition of "close to zero" is further away from zero than your definition. This is my third tube amp build, and my first failure. And I am very aware of the dangers involved. I am also intrigued by your suggestion "Get a professional, stick around and learn" - this sounds an impractical proposition for an amateur builder. Equally "[once] you are very sure...." (I liked the "very"). Most of the new things we try in life (like learning to drive a car, for example), the first time we try we are never 'very' sure; we have done our homework, we are aware of the theory, but until we try we are never very sure. Like building an amp. But most times the experienced amongst us are willing to help the inexperienced. Not so here it seems.
Yes, I was offended by your response. If this is the attitude of the community on this forum - stick together, lads - then I simply choose to leave. There is nothing to learn here.
OK, so almost a week and no replies, so as an alternative can anyone point me towards another site/forum/source where I can ask for help? No disrespect intended, just need to get things fixed. Thanks.
Sorry chaps, I meant 'diode' D1. I connected D1 diode with the wrong polarity so I then reconnected it correctly. I don't know how to check for diode damage so I'm about to google it right now....
Raslo
HI, I've just finished my G3 build and it doesn't work. I'm not terribly surprised as my electrical knowledge and skills are close to zero, however, I would like to get it going obviously!. There are some serious discrepancies on measurements, so much so that I stopped measuring at #9 on the checklist to switch off the amp 'in case'.
First off, the switch light comes on but the tubes do not heat up (no glow from any tubes).
Readings taken are as follows (check #/item/should be/is):
1/wall plug/230/225
2/V3-4+5/6.5/7
3/BR1-~+~/208/223
4/(A) lug 21 t/260/310
5/(B) lug 18 t/237/310
6/(C) lug 18b/225/310
7/V1-1/225/311
8/V1-3/81/300
9/V1-6/105/262
When I tried to measure V1-7 the meter went wild, climbing past 500 then back to low numbers and back again. One other qualification, when I first plugged in I got smoke from resistor R22 between the four large capacitors so I switched off immediately. I checked the build, and found I had connected capacitor D1 with wrong polarity. I reconnected, checked the resistor (it read correct value so I didn't change it). So this could be related to/my problem. Does anyone have any suggestions or observations?
Many thanks, Raslo
