Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Were There Different Runs Of The 40-190?
#3

Thanks Glenn! I've got all the NA Riders paperwork and my own original Beitman schematics. All showing the 7J7. I know the 5Y3 isn't correct and why it was changed I don't know. 84 has a 5 pin socket and it was changes to a standard octal to support the 5Y3. Okay to run the 5Y3 but not with an aftermarket power transformer that's rated 250-0-250 on the hi-voltage outputs. If my memory serves me well the 5Y3 wants plate voltage of 350-0-350 for the hi-voltage. The transformer that's on it now has a big puddle of wax under it so I know it got very hot. Haven't checked winding resistance yet. Puddle of wax could have been from the original transformer. Just gettin' started on it and wanted to figure out this 7J7 issue 1st. A couple of resistors coming off of the 6J8 are color coded grn. stripe with brown body but they don't read anything with a "5" at the beginning. In fact they both read completely different by hundreds of ohms.

I'll get in touch with Chuck. His paperwork is always great.

Thanks again,
Pepper

"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th


Messages In This Thread
Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-23-2011, 06:33 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
Rogers Majestic R-646
No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
Rogers Majestic R-646
Thanks RodB for the help. But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM
Philco Model 16 wiring question
I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM
HiFi (Chifi) tube amp build - but my own design.
So, here's Prince on stage halfway through Purple Rain when he stoops down to his tech and says "Rod, pull out that...RodB — 09:17 AM
Rogers Majestic R-646
Today I finished inspecting all the parts. The result is not very pleasing. The first positive news: 1) The power tr...Vlad95 — 11:40 PM
HiFi (Chifi) tube amp build - but my own design.
Well, found muh culprit. After using socket test adapters and finding voltages all ok, swapping 6V6s, no avail, swapped ...TV MAN — 11:18 PM
HiFi (Chifi) tube amp build - but my own design.
Well, maybe - maybe not  :lol: It's been an interesting project so far! Something so simple, yet so cranky. The 1st one ...TV MAN — 05:12 PM

[-]
Who's Online
There are currently 966 online users. [Complete List]
» 1 Member(s) | 965 Guest(s)
Avatar

>