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

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

*Solved Minerva Tropic Master model w117 "early"-crackle pop & no vol ****SOLVED
#6

fault still same- no audio out,, set was working then suddenly went silent... no smoke or nothing either.

I am posting up a diagram of this "early" Minerva tropic master for our records if thats ok.
I looked at my rectifier tube 25z6 and noticed something. earlier i was saying this was a 25L6,, so i will correct now.
when you look into the glass all the wire leads mesh into a stright line all encased in the glass.
there is are two leads that have a tab but no tiny wire is touching them like on the other leads.
this is true for two leads i see.  this may be why the set is not working,, because the tube is bad.
the 25z6 tube lights up but i dont have any reasonable higher dc power on this tube coming out on any of the pins.
I guess just because it lights up does not mean its good or working ,,, correct?

does anyone know if there is a standard for how to "count" the leads inside the tube,, as in which one is pin 1, 2 and 3 and so on?
I ordered a few tubes for this and some caps today.
also..
on the diagram below,, the tube line downstream of the power plug show the grid power if i am correct.
what pin numbers can i "assume"  are shown. 
the print assumes the user is qualified and trained so leaving off the pin numbers  ,,, i dont mind but i want to document them on the print by hand myself.
I am still looking for a very clear version of the diagram but this one will have to work for me.

if i find the set works with a new rect tube,, i need to see if there was a reason as to why it blew.  It may have something to do with the cap that was ready to blow up but i powered down in time... dono..........

placed an order with Gary at PTOTP,, hope he fills it soon.


Attached Files Image(s)
   


Messages In This Thread
RE: Minerva Tropic Master model w117 "EARLY" - by jcassity - 06-11-2018, 03:56 PM



Users browsing this thread: 34 Guest(s)
[-]
Recent Posts
A Marconi model 86
Dan; I've seen some Marconi sets like that before, one was a console though I'm not sure if it was a model 86. It's a...Arran — 05:09 PM
An attempt to remove the Field Coil from a G speaker
Milkjug plastic? Whatever is chosen for the spider, the material must be compatible with popular adhesives... Th...Chas — 05:05 PM
An attempt to remove the Field Coil from a G speaker
Mike; I would not use plastic from a milk jug for a spider, first it's polyethylene/polypropylene which resists most ...Arran — 04:56 PM
Philco model 60
This is my thread on 60 from 2016. I had to rewind the osc coil, and I actually counted the turns and then rewound i...morzh — 03:34 PM
Philco model 60
Yes, Mark belongs to the same Michigan Antique Radio Club that I do. I suspect that the oscillator coil is in need of a ...Radios1340 — 03:10 PM
A Marconi model 86
Yeah. I am dreading the thought of what to do with all my consoles when I will no longer be able to move them around. I...morzh — 02:51 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Cool gadget, Buzz. I took me a couple of second to undestand that that oscillating thing makes the wire to spool correc...morzh — 02:50 PM
A Marconi model 86
My back hurts already, you could build a house with all the wood. PaulPaul Philco322 — 02:49 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Part 4 of this series now uploaded link below to anyone interested Buzz — 02:39 PM
Philco model 60
Welcome to the Phorum, Radios1340!  The oscillator coil on the 60 is a common culprit.  I just bought a 60B (June 1934) ...GarySP — 02:33 PM

[-]
Who's Online
There are currently 7371 online users. [Complete List]
» 3 Member(s) | 7368 Guest(s)
AvatarAvatarAvatar

>