HOME | COUNTRIES | CITIES | COMPANIES | SPORTS | CARS
news videos images websites



Hello everyone and thanks for reviewing I thought I'd take a moment. Here and just share a few photos from my work in the power supply section on that 4b 231 starting out here working around that synchronous vibrator socket here replacing our tenth the two resistors and then next moving along here to the buffer caps which are the. High-voltage capacitors you can see the originals rated at 1200 volts DC and I went back with 2k VA and I got those in place and it really turned out well neatened up everything around that area the two capacitors there together than I'm pointing out didn't have the proper value so I went back with. 2.25 s to get the 0.5 micro farad as called. Out on the schematic that's a capacitor c9 in addition you can see part number 9 which is one of the RF chokes that we took a closer look at 4.8 micro henries and I've got that back in place and here I'm just moving back toward the power choke itself and that other RF choke that. Was kind of buried back. In the corner just above the electrolytic can just looking at some of the solder locations and some things that I'll have to undo before. Prepping here and getting the new capacitors in place same exercise here I removed the can itself for the electrolytic sand did find that missing lead that was protruding out there did come from the original capacitor here you can see I'm. Just getting my new capacitors in place to be put inside the can so three new electrolytic capacitors to that type directly back into the choke the RF choke that is and the power choke and then the third one going back over to one of the tubes there I. Leveraged the coil method for the positive. And the negative side of the electrolytic capacitors makes it simple and easy to work as well as to tear back apart if needed in the future so these are just restocked in the can the leads will the true through as you can see here in this next photo and I'll. Do the tie ends here I'm moving along to that other RF choke and I thought. I would check it out a circuit and you can see around 1 mil of Henry so not much of a change there and then just looking again at the connection points here for the power choke that were D soldered and cleaned up as well in an. Earlier video I had mentioned that tar-like substance is placed over the power choke if someone knows again what that was on there for please let me know but guesses for maybe sound vibration you can see here I'm remarrying the inductance of the choke. At about 12.5 Henry's here. I'm making an X connection and the purpose for that was to tie back into the choke itself instead of having two separate leads and here I did a mid cut to go back to the RF choke as well where one of the terminal lugs broke off just to simplify things here getting. Things back together and you can see here I'm just about wrapped up I'm just recapping it's pretty simple straightforward and there's that other electrolytic that I did the tie-in as well with that orange lead that you'll see just in a moment coming across here that I tied it. In so someone had. Placed that other electrolytic outside of the power supply side here's. That other missing resistor that was looking for r11 you can see. Where it was bypassed here in the terminal strip was not being used again that's where the lamp itself should have attached back. Down at that point where I had the pencil located the resistor values right on the mark and now you can see here I've removed it from the circuit I'm going to leverage a six volt lamp and I've tied that in directly to the terminal strip there for the six. Volt input supply in lieu of using that specialty bulb okay I had our shown some close-up pictures here of the power supply circuit it's just so crowded in here even with the modern-day components and I think better depicted by some still photos. There in a slideshow that I showed earlier and here's some of the other few resistors here one two that I've replaced thus far it's a simple set so there's not a lot of resistors in here I think I've checked this one this one and they're well within 20 percent but still. Got a few more here to check just to make certain and you can see I've got modern-day capacitors in this one I may play around with this will control the amount of treble or bass that. I'm able to hear out of the speaker and. This being a lower value will bring a more of a treble type sound. Out of the speaker so just like I've done in some other videos I may increase this value and give the radio just a little bit more bass that depends. Again if we're able to get this thing up and actually a plain preliminary check of all the if' coils with the tubes removed I'm getting resistance readings that I think that are in line so I think the oscillator coil and the IFS are okay. I'm a little suspect here with the on and off and volume control and I'll expand more on that in just a bit this is my B+ lead and you'll see I might have it jumpered in. When I bring this thing up it attaches right here so for now I've got this loose and this should be my hundred and forty seven volts coming from the power supply itself as you can. Hear the Xena 4b. 231 is actually playing here on a six volt supply and you can hear the vibrator here is well my turn the volume down here I have. Not completed the restoration that the vibrator continues to fail that's after you know rebuilding the power supply circuit that you guys saw that I'm not surprised we're well. Outside that 90-day warranty that they promised back in the day and I checked all the tubes and the tubes are okay I've got one tube here I've got to replace it's a little bit weak and then I want to put a matching to you here in. The detector oscillator see if I can find an original of six Delta eight and live with the six alpha eight that it's working with that particular tube you see. My B plus voltage here is low should be about one hundred and forty seven volts it's just high end point here and I'm only about what eighty nine volts and the vibrator is intermittent in nature it will actually just cease up here and stop working which I'm not surprised so let's go ahead and take the vibrator.

 


Stewart Warner Company News

Thu, 18 Apr 2019 07:00:00 GMT
Trial date was set for brutal 1975 Warner Robins killing. Why is case now being dismissed? - Macon Telegraph
Trial date was set for brutal 1975 Warner Robins killing. Why is case now being dismissed? Macon Telegraph A high-profile case against Mary Jane Stewart of San Antonio in the more than 43-year-old killing of her former roommate, 16-year-old Cheryl White, in Warner ...
Fri, 12 Apr 2019 07:00:00 GMT
Gary Stewart, longtime Rhino Records and Apple executive, dies at 62 - Los Angeles Times
Gary Stewart, longtime Rhino Records and Apple executive, dies at 62 Los Angeles Times As a music enthusiast for Rhino Records and Apple, Stewart advocated for lesser known, unjustly dismissed or overlooked music by artists including the ...
Thu, 09 May 2019 17:23:00 GMT
Global Aircraft Fuel Gauges Market 2019-2024 | Business Analysis and Evolutionary Growth - Perfect Herald
Global Aircraft Fuel Gauges Market 2019-2024 | Business Analysis and Evolutionary Growth Perfect Herald Latest Research on Global Aircraft Fuel Gauges Market Provide Forecast Report 2019–2024 presents an in-depth analysis of the Aircraft Fuel Gauges which ...
Wed, 10 Apr 2019 07:00:00 GMT
New Book Examines Chicago's Manufacturing Heritage | 2019-04-10 - Assembly Magazine
New Book Examines Chicago's Manufacturing Heritage | 2019-04-10 Assembly Magazine CHICAGO—A new book entitled Made in Chicago (Arcadia Publishing) examines the important role that manufacturing played in the history and growth of the ...
Tue, 23 Apr 2019 07:00:00 GMT
Police thought they found a killer 41 years after her roommate’s death. Now, it’s too late. - The Washington Post
Police thought they found a killer 41 years after her roommate’s death. Now, it’s too late. The Washington Post A tip led police to Mary Jane Stewart, who was charged with murder. But the case won't be going to trial.
Thu, 09 May 2019 16:18:16 GMT
The best: Ubly teacher wins Educator of the Year award from Michigan Lottery - ABC 12 News
The best: Ubly teacher wins Educator of the Year award from Michigan Lottery ABC 12 News Stewart Kieliszewski won the Michigan Lottery's Educator of the Year award for 2019. He teaches Earth science, biology, mechatronics and media for eighth ...
Tue, 07 May 2019 12:29:00 GMT
Met Gala 2019: Ezra Miller, Kristen Stewart, and More of the Wildest Camp Looks (Photos) - Yahoo Entertainment
Met Gala 2019: Ezra Miller, Kristen Stewart, and More of the Wildest Camp Looks (Photos) Yahoo Entertainment Here's how Hollywood's biggest film and television stars interpreted his year's camp-themed Met Gala. Related stories. What Laura Dern and Kristen Stewart ...
Sat, 04 May 2019 06:03:25 GMT
Stewart gets sprint car win in Tennessee - The Republic
Stewart gets sprint car win in Tennessee The Republic Tony Stewart raced from the K&N Filters Pole Position into the RockAuto.com United Sprint Car Series Victory Lane on April 27 in the USCS Outlaw Thunder ...
Thu, 09 May 2019 10:02:55 GMT
Projecting Michigan State's depth chart on offense after spring practice - MLive.com
Projecting Michigan State's depth chart on offense after spring practice MLive.com Michigan State's offense was a mess last season and led to a restructuring of the coaching staff.
Mon, 06 May 2019 21:18:33 GMT
Rubio knew about election hacking but was restricted in what he could say in Nelson's defense - Orlando Sentinel
Rubio knew about election hacking but was restricted in what he could say in Nelson's defense Orlando Sentinel When former U.S. Sen. Bill Nelson was castigated for saying Russian hackers had penetrated Florida voting systems, his colleague, U.S. Sen. Marco Rubio, was ...