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

Thread Closed

Model 90 Tuning after cleaning tuning capacitor
#30

<< Bingo >> Steve and company!!! Icon_angel

That gang bothered me too.

Problem is, when reassembling it i thought i used the washers that came with it.  (Still do)

To top it, i broke the hard board that held the stator station of that same gang but epoxyed it with JB Weld >AND< i ensured that it did not effect the performance of the hard board and did not glue the frame and Stator together. 

See picture - see the brass 'connector' top to bottom that caused my ground issue - it came this way !  that's a bottom rivet so i believe it is original.

THE REAL FIX is what everyone here kept alluding to, the plates have to be isolated from the stators.  The one odd thing, and i still can't understand, that particular stator had a brass (looks like) plate that 'forced' ground when I screw in the stator. Mike is correct, i measured in circuit (didn't know any better) but i know that .9 or 1.2 is connectivity therefore ground!  That plate WAS grounded because of the riveted plate.  I proved that by completely disconnecting the other screw and it remained grounded.    

A couple of weeks ago i when to a estate sale where the former owner keep jars of screws, nails etc. in his workshop.  i saw a jar of washers and for $1 thought they'd come in handy.  I used one of those washers that is hardboard and de-grounded Icon_biggrin my stator and plates for that gang!  Now it measured 49.5 ohms instead of connectivity/ground.

I turned on the radio, misaligned to $%^& (heck) even so, LOUD and clear! When i aligned i had the BEST reception and sound than before!!!!  it is SO clear!   

My cleaning spree did something - would i do it again or listen to wiser advice?   Right now, i just like the result.

I owe it ALL to you gentlemen who lent your time and talent.  You pointed me in the right direction - i just had to figure it out.  Look at the picture and tell me is this Plate NORMAL (?) for Philco 90 gangs?  if so, what isolates the plates from the frame - i didn't have a hardboard washer with mine. 

Thank you ALL so much - you guys are the greatest.  Now, on to the cabinet!

Rich          


Attached Files Image(s)
   


Messages In This Thread
RE: Model 90 Tuning after cleaning tuning capacitor - by winston763 - 01-29-2016, 12:28 AM



Users browsing this thread: 4 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 2584 online users. [Complete List]
» 1 Member(s) | 2583 Guest(s)
Avatar

>