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Messages - electra225

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Chat / Re: GM car question for Greg, others
« on: December 13, 2018, 07:52:47 PM »
They do make electric chokes, but they are only a little better than nothing.  They work on time, not on engine conditions.  The original setup works okay if it is in good shape.

Chat / Re: Magnavox "Symphony" on "The Neighborhood"
« on: December 11, 2018, 05:37:04 PM »
I had forgotten that some manufacturers mixed little speakers and horns.  Thanks for clarifying.   :)

Chat / Re: Magnavox "Symphony" on "The Neighborhood"
« on: December 11, 2018, 02:55:46 PM »
Several manufacturers used eight speaker systems.  All of them eventually used horns in place of small speakers.  Either cost was the reason or they found horns more successful than cone speakers.

Chat / Re: Magnavox "Symphony" on "The Neighborhood"
« on: December 11, 2018, 11:41:43 AM »
They used two 4 X 10 horns to replace the six small speakers.  Then called them the "little" Imperial series.  The big Imperials got bi-amps.

Music / Re: Patsy Cline
« on: December 09, 2018, 01:55:49 PM »
Elton, you got it right on the nose.  However may I suggest?.....

You forgot to mention wearing holey jeans, have a roll of fat over where your belt should be and rap to lyrics that make no sense whatsoever.  And have a band that looks like they had a hard night.  And have a drummer that plays like he was driving roofing nails.

Why can't we return to the Nashville Sound?  All we need is singing talent, writing talent and instrumental talent.  Otherwise, we are all set.... :-[ ;)

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 09, 2018, 11:54:35 AM »
This chassis uses a 130Uf @200 volt ecap that appears to be an odd value.  It does not follow the rectifier, so I can increase it to 150uf @ 350 volts, which is a more common value.  I can get the coupling caps I need from Sal.  I prefer to give him my business whenever I can.  Part of the problem I was having with the .0039 was that I was looking in orange drops.  They do not make it in that value that is convenient to obtain.  I like simple.  Anything I perceive to be unnecessarily complicated I avoid.  I am being careful with component values in sweep areas and where I know exact values to be important.  I'm learning, albeit slowly......  "Gloriously Complicated".

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 08, 2018, 04:11:41 PM »
I found some at Mouser's.  I need a break from their website.  Horrible.  The only word I know to describe it.  If I need to deal with them, I'll probably restuff with PZ's.  I love those things.  I'm referring to the PZ series of e-caps from Nichicon.  They are skinny enough I can restuff a four-section can, no problem.

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 08, 2018, 03:34:38 PM »
I need an .0039 at 200 volt cap in the sweep section.  All I have been able to find is either .0033 or .0047.  Wonder how critical the value is.  Everything else I need Sal has.  I suppose Mouser's is my only option?

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 08, 2018, 02:38:59 PM »
I have gone thru the resistances to ground and resistors on the sweep board and the HV section.  Like previous boards, the resistance to ground readings are acceptable, considering the bad socket connections on the 6CG5 tube.  Is it possible there are NO resistors in this entire chassis that are out of range?  Is it even reasonable to consider the fact?  I have lifted one end of certain resistors that appear to be out of tolerance when I found they were in parallel with another component.  All have been okay up to this point.  All have been within 10% of spec.  Certain resistors with closer tolerances have been checked and have been found okay.  I suppose when I get the chassis back into the cabinet and connected to the CRT, I'll discover how accurate my work has been.  I checked more than once.  Hmmmm....... :-[

The plan right now is to get my parts order finalized and get the parts.  I'll recap the chassis first, then do the electrolytics last.  I have to figure out a way to get the high voltage cage off before I can restuff one of the electrolytic can caps.  I'll recap and clean, recheck my work ad nauseum, then take this thing home in the spring and see what happens.   

My first idea was to replace every resistor and every capacitor that was not a ceramic disc in this entire chassis.  Cooler heads prevailed and suggested that more harm to the PC boards might be done than might be gained by such a plan.  If my work so far has been accurate, replacing every component would have proven a huge waste of time.  If I have to dig this chassis back out of the cabinet to redo my hack by not changing everything, I may not be too proud of myself.  "Gloriously Complicated".......... ;) :)

I have learned that the folks who work on these things with more experience than I have (everybody on the planet who works on these things! :) ) leave cleaning controls until the chassis is powered up and a fault has been found.  I don't want to fool with the settings in high voltage and that and upset the operation of the Magnalux system.  I have a vague idea of how it works, and know just enough to leave it alone until I have an issue.  Then I'll ask for suggestions on how to proceed from that point.

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 08, 2018, 01:47:48 PM »
I have gone back thru the resistance to ground on the low voltage, sound, IF, and sweep boards.  The reason resistances are off is due to the poor solder connections on the 6GC5 voltage divider tube.  I have run back thru the individual resistor measurements and have investigated any that were out of tolerance.  The 3900 ohm resistors I thought were open actually were okay.  One should be cognizant of meter settings when going from megohms to lower ohms.  I did not have my meter set correctly, and therefore got wonky readings.  This is where having my typical five or six VTVM's fired up at once on the bench is of advantage.  I avoid such errors.  No harm was done except some wasted time and some skinned-up pride.  I have done the LV, sound and IF boards with the individual resistors and have yet to find one out of tolerance.  I believe, at this point, that if I recap and fix that socket with the bad connections, I will be closer.  I wonder if this is a fairly low-hour chassis that has suffered from "happy hands at home" considering that wholesale replacement of all the tubes.

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 08, 2018, 11:28:01 AM »
I have measured all the resistors in the TV chassis.  I am using a calculator to figure out the percentage of drift I measured.  An odd fact I have found is that all the resistors I've calculated so far have drifted tenths of a percentage on either side of 9%.  There are those that should have closer tolerance than 20%, so these I'll go back over to determine if they are far enough out of tolerance that they should be replaced.  I'll note which these are and will go accordingly.  I was expecting more out-of-tolerance resistors than I'm seeing so far.

Music / Re: Patsy Cline
« on: December 07, 2018, 08:54:41 PM »
Patsy Cline never recorded a bad note.  Patsy Cline and I share a birthday.  She would be 86 is she was still with us.

Chat / Re: Magnavox "Symphony" on "The Neighborhood"
« on: December 07, 2018, 08:45:58 PM »
I have a 1ST655 Symphony.  It has eight speakers.  The only series built by Magnavox with eight speakers.  93 series amp and 57 series tuner, 70 series MPX adapter.  Dandy rig.  Arguably Magnavox's best.

The show is on CBS.

Chat / Magnavox "Symphony" on "The Neighborhood"
« on: December 06, 2018, 10:45:19 PM »
On the latest episode of this CBS comedy, starring Cedric the Entertainer, Cedric was playing "vinyl."  He was using a Magnavox Symphony, a model 1ST657, circa 1961.  They showed a pretty good shot of it a couple times.  It appeared to be in really nice condition. 

Magnificent Magnavox / Re: Magnavox Stereo Theater 1MR418M restoration
« on: December 04, 2018, 02:41:04 PM »
I'm the only "old TV guy" in my neck of the woods for several hundred miles.  This has been a learning experience for me that I have looked forward to for a long time.  I'm not sure if I'll ever work on another TV, but I want to do all I can to get this one going as well as I can.  I appreciate the confidence you have in my ability.   :)

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