DUH....If I wasn't too lazy to look at the schematic, I would see that this resistor is in the heater string. R38 is it's schematic symbol. How would that resistor create a hum? .....
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- Sat Aug 22, 2026 4:10 am
- Forum: Radios And Tuners
- Topic: Sears Silvertone table radio, model 5021
- Replies: 24
- Views: 975
Re: Sears Silvertone table radio, model 5021
Was the 300 ohm, 5-watt resistor in the power supply?
DUH....If I wasn't too lazy to look at the schematic, I would see that this resistor is in the heater string. R38 is it's schematic symbol. How would that resistor create a hum? .....
DUH....If I wasn't too lazy to look at the schematic, I would see that this resistor is in the heater string. R38 is it's schematic symbol. How would that resistor create a hum? .....
- Fri Aug 21, 2026 11:05 pm
- Forum: Radios And Tuners
- Topic: Sears Silvertone table radio, model 5021
- Replies: 24
- Views: 975
Re: Sears Silvertone table radio, model 5021
We'll keep a good thought that you got it this time. You should be sure to tell Mike how much you appreciate him being there for you. I sure wish he was closer to me...... 
- Tue Aug 18, 2026 1:38 am
- Forum: Finds
- Topic: Magnavox Large Imperial - Salvisa Ky. - $100
- Replies: 7
- Views: 461
Re: Magnavox Large Imperial - Salvisa Ky. - $100
The floods in Indiana are in the area I was raised in. Noblesville got hit really hard. The lady I mentioned was sitting at my table when we were on break. She said she was from Fort Wayne. I mentioned that my aunt worked at Magnavox and hauled riders from Hamilton County to Fort Wayne in her six-do...
- Mon Aug 17, 2026 11:41 pm
- Forum: Chat
- Topic: project car
- Replies: 9
- Views: 580
Re: project car
You have to rebuild the window and top cylinders along with the pump of you change from brake fluid to other types of hydraulic fluid. The seals are not compatible. As long as the brake fluid is not leaking, operation is a good as with hydraulic fluid.
- Mon Aug 17, 2026 11:30 pm
- Forum: Finds
- Topic: Magnavox Large Imperial - Salvisa Ky. - $100
- Replies: 7
- Views: 461
Re: Magnavox Large Imperial - Salvisa Ky. - $100
It is an Italian Provincial cabinet. In mahogany, my thinking is that it's the prettiest cabinet Magnavox ever made. As an aside, I found out that a lady who works with me at the store worked "on the line" at Magnavox from 1954 to 1969. Her specialty is "the IF board" the little ...
- Sun Aug 16, 2026 11:49 pm
- Forum: Chat
- Topic: project car
- Replies: 9
- Views: 580
Re: project car
I think you are describing the blue I mentioned. They called it some color besides blue. Dresden Gray or some such. The '49 Roadmasters had a longer hood and doghouse than the Supers did in order to house that long 320 CID straight 8. You could get a full-leather interior in Roadmaster. Any hydrauli...
- Sun Aug 16, 2026 12:19 am
- Forum: Finds
- Topic: Magnavox Large Imperial - Salvisa Ky. - $100
- Replies: 7
- Views: 461
Re: Magnavox Large Imperial - Salvisa Ky. - $100
Same cabinet as mine only in walnut rather than mahogany. 1959 or 1960 if it has a tuning eye. The changer may "need a belt". Good luck buying a belt for a Collaro Custom changer. Good price, seems to be in nice shape. I hope it goes to a good home rather than a console raper.....
- Sat Aug 15, 2026 10:22 pm
- Forum: Music And Media
- Topic: Jim Reeves
- Replies: 0
- Views: 309
Jim Reeves
Today was Jim Reeves day out at the shop. I dug out the Harmon-Kardon TA-230 "Stereo Festival" to handle the amplifier duties and used my old dependable DJ turntable with its Stanton cartridge. I connected the H-K receiver to the Fisher speakers out in the shop. Neither the Stereo Festival...
- Fri Aug 14, 2026 2:04 am
- Forum: Finds
- Topic: Record Player (Zenith?) Greensburg In. $75
- Replies: 6
- Views: 411
Re: Record Player (Zenith?) Greensburg In. $75
That certainly is a horrible job of taking pictures..... 
- Mon Aug 10, 2026 11:30 pm
- Forum: Chat
- Topic: project car
- Replies: 9
- Views: 580
Re: project car
1949 Buick Super four door sedan, model 41-D. Powered by a 248 CID straight 8 and probably a Dynaflow transmission. First year for hydraulic lifters in the 248, on Dynaflow jobs only. Standard shift models got solid lifters. One year only body, one year only instrument panel. There were no 1949 Spec...
- Mon Aug 10, 2026 1:58 am
- Forum: Radios And Tuners
- Topic: Sears Silvertone table radio, model 5021
- Replies: 24
- Views: 975
Re: Sears Silvertone table radio, model 5021
I have a Motorola stereo that has a 17C9 in it. Those are ten-pin tubes in a nine-pin socket. Have you tried wiggling tubes and moving the chassis in a totally darkened room? You might be able to see a little spark where the bad connection is if there is one. Does anything look darkened or burnt? Ma...
- Sat Aug 08, 2026 7:46 pm
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
I can't find anything wrong with this thing, yet it still doesnt work right. I have changed resistors and caps in the vertical and sync sections, with not one iota of improvement to speak of. Voltages appear to be okay. The vertical output transformer doesn't work like one on a TV would. Voltages on...
- Sat Aug 08, 2026 5:02 pm
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
I should have explained my question better. The bands on most resistors give a 5% tolerance. My question was/is how far off tolerance do resistors have to be before I see symptoms of degraded performance? Will a 5% resistor cause trouble if it's 1% higher, 10% higher, how "off" spec does i...
- Sat Aug 08, 2026 1:47 am
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
I can't help but believe I am overlooking something. I have done all this work, but haven't found anything really wrong yet. How drifted can resistors be in the vertical section? 5%? 10%? The schematic doesn't specify. I know in a TV you want the vertical components to be pretty much spot on. While ...
- Sat Aug 08, 2026 1:38 am
- Forum: Radios And Tuners
- Topic: Sears Silvertone table radio, model 5021
- Replies: 24
- Views: 975
Re: Sears Silvertone table radio, model 5021
Bell wire makes good wire for hardwiring a printed board. Not all that tough, just tedious. The GE stereo I did for Don had about half the amp chassis hardwired and it's been running just fine for at least ten years now. My problem with running traces looking for a breach is something my eyesight is...
- Sat Aug 08, 2026 12:05 am
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
I know now for relatively sure that the issue is not in the yoke, nor in those 560 ohm resistors in the yoke. I pulled the CRT, took it all apart, checked the coils both visually and with an ohmmeter and they appear to be okay. I changed both resistors. One measured 610 ohms, the other measured 591 ...
- Fri Aug 07, 2026 11:58 pm
- Forum: Radios And Tuners
- Topic: Sears Silvertone table radio, model 5021
- Replies: 24
- Views: 975
Re: Sears Silvertone table radio, model 5021
Since it always possible that something weird, out of the ordinary, may be going on, I asked about the interlock. Might it be possible that the interlock which is fairly rigid in the back, might be flexing the PCB enough that it is breaking a trace to the filter caps. You might take a good look at t...
- Fri Aug 07, 2026 12:37 am
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
I don't know what to do next. Every component in the vertical circuit checks fine. I have run jumper wires to make sure there are no bad traces. I wonder if the specs I have for the voltages on the 13GF7 are right. I have 87 VDC on the plate of the vertical oscillator. There is a 220K ohm resistor c...
- Thu Aug 06, 2026 11:41 pm
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
Changing the 10uf@ 450 VDC boost filter cap again did nothing. Changing the .1uf @ 1000 volt cap actually did help with vertical deflection, but on the top side. I was able to turn the height control down considerably, which is a step in the right direction. The white line is decreased, and I'm conv...
- Thu Aug 06, 2026 10:02 pm
- Forum: Tools And Test Equipment
- Topic: B&K 1077 TV analyzer
- Replies: 24
- Views: 1276
Re: B&K 1077 TV analyzer
Low boost voltage..... :oops: :cry: Supposed to have 210 volts on pin 8, the plate, of the vertical oscillator. I have 75 VDC. The schematic does not give the boost voltage, per se, but I have 475 Volts at the flyback transformer, yet only 75 at that plate. There are two caps, one 10uf electrolytic ...
