Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

*Solved Minerva Tropic Master model w117 "early"-crackle pop & no vol ****SOLVED
#78

(06-29-2018, 08:10 PM)jcassity Wrote:  the 40 ohm power resistor is getting extremely hot still
Uhhh that's why it's called a power resistor. Size(wattage) should be at least 2X current, three is better.

463 ma is reading from where? Is that total taken from AC input? 

Tube heaters should be drawing 300ma, if significantly higher then there isn't enough resistance in that line. The 25Z6 should also be supplying around 80ma, so a total of 380-400ma would be in ball park. Even if heater string is high, I doubt it has anything to with popping issue.

Tom


Messages In This Thread
RE: Minerva Tropic Master model w117 "EARLY" - by 35Z5 - 06-29-2018, 08:53 PM



Users browsing this thread: 9 Guest(s)
[-]
Recent Posts
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM

[-]
Who's Online
There are currently no members online.

>