Were There Different Runs Of The 40-190?

Register

Guest Join Us

Hello Guest,

Please feel free to join us!
There are many more parts of the Phorum that only members can see.

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

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Were There Different Runs Of The 40-190?

Glenn Roberts
Senior Member

Posts: 292
Threads: 17
Joined: Aug 2010
City: Yorkville IL

#2

09-23-2011, 05:55 PM

Starting with run number 4 the tube was changed from the 7J7 to the 6J8 and then in run 8 they changed it back. Hmm, must have run into supply problems. What I didn't see was any change to the schematics. The Rectifier in the drawings is also an 84 not a 5Y3. Here is the Nostalgia air link,

http://www.nostalgiaair.org/PagesByModel...013339.pdf

Chuck would have all the service info regarding this by ordering his packet,
http://www.philcorepairbench.com/schematics.htm

Glenn

Find

« Next Oldest | Next Newest »

Messages In This Thread

Were There Different Runs Of The 40-190? - by Pepperoni - 09-23-2011, 04:51 PM

Re: Were There Different Runs Of The 40-190? - by Glenn Roberts - 09-23-2011, 05:55 PM

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

Re: Were There Different Runs Of The 40-190? - by Arran - 09-24-2011, 02:13 AM

Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-24-2011, 03:10 PM

Re: Were There Different Runs Of The 40-190? - by codefox1 - 09-24-2011, 04:09 PM

Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-24-2011, 09:44 PM

Re: Were There Different Runs Of The 40-190? - by Arran - 09-25-2011, 10:59 PM

Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-26-2011, 12:14 PM

Re: Were There Different Runs Of The 40-190? - by Ron Ramirez - 09-27-2011, 07:21 PM

Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-27-2011, 07:40 PM

View a Printable Version

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 965 online users. [Complete List]
» 1 Member(s) | 964 Guest(s)