I believe that set was made by Raytheon, and there was also a Truetone-branded version. As far as the SS rectifier, I know I've told the story about the organ amplifier that had one in it, along with a lot of cooked parts from prolonged overvoltage. Those things may be OK for bench-testing something under controlled conditions, but not for long-term use.
Great job on getting the sensitivity issues on FM fixed, it really is a night/day difference. There's really nothing you can do about AM, there's always going to be an inductance mismatch with the wrong antenna
The customer constraints can make a job challenging. My problem is, I want perfection so I have to compromise, which I absolutely hate. Usually I end up eating the difference. It depends on the customer. If he’s a regular, I make it happen. A new guy might have to find another tech. Nice work and you did end up making it work as intended (For now).
Jordan, that sounds a hell of a lot better. I'm sure the owner will be happy with the improvement. The frequency display reminds me of old style car speedo's.
Due to customer constraints this is a radio that needs pinpoint repairs. Luckily no need to replace paper or electrolytic caps ( for now) but all tubes should be tested first and clean the sockets since it has some reception issues. IF alignment comes next . There are a lot of Megohm resistors in this radio and all should be checked because they tend to go higher in value. Too bad it has a solid state rectifier with an insufficently sized compensating resistor. Voltages are all a little bit high. You did good on a possible minefield by limiting repairs Jordan.
I had a radio once that was too sensitive and I had to get rid of it! All it did was sit on the display shelf and cry! How come leaky caps don’t leave puddles of water? Can a reducing resistor compensate for using that solid state rectifier like they do when replacing a selenium rectifier with a diode and resistor to lower the voltage due to the efficiency of the diode vs the selenium?
Jordan, You said you are in La Mesa, CA. Several years ago was your shop in North Park/Kensington area ? If so.... I brought a Magnavox FM43 in for service that had Silver Mica disease.
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I believe that set was made by Raytheon, and there was also a Truetone-branded version. As far as the SS rectifier, I know I've told the story about the organ amplifier that had one in it, along with a lot of cooked parts from prolonged overvoltage. Those things may be OK for bench-testing something under controlled conditions, but not for long-term use.
Did you say Gamble-Skogmo? Shango loves him some Gamble-Skogmo!
I'm really enjoying these video's
Great job on getting the sensitivity issues on FM fixed, it really is a night/day difference. There's really nothing you can do about AM, there's always going to be an inductance mismatch with the wrong antenna
Love Coronado stuff....
*we had a Gambles in our small town.
The grill fabric being on crooked it stressing me out.
The ocd can be a bi*ch.
I noticed as well.
The customer constraints can make a job challenging. My problem is, I want perfection so I have to compromise, which I absolutely hate. Usually I end up eating the difference. It depends on the customer. If he’s a regular, I make it happen. A new guy might have to find another tech. Nice work and you did end up making it work as intended (For now).
Wow, that’s a nice looking table top set! 😅
Jordan, that sounds a hell of a lot better.
I'm sure the owner will be happy with the improvement.
The frequency display reminds me of old style car speedo's.
Due to customer constraints this is a radio that needs pinpoint repairs. Luckily no need to replace paper or electrolytic
caps ( for now) but all tubes should be tested first and clean the sockets since it has some reception issues. IF alignment comes next . There are a lot of Megohm resistors in this radio and all should be checked because they tend to go higher
in value. Too bad it has a solid state rectifier with an insufficently sized compensating resistor. Voltages are all a little bit
high. You did good on a possible minefield by limiting repairs Jordan.
I had a radio once that was too sensitive and I had to get rid of it! All it did was sit on the display shelf and cry!
How come leaky caps don’t leave puddles of water?
Can a reducing resistor compensate for using that solid state rectifier like they do when replacing a selenium rectifier with a diode and resistor to lower the voltage due to the efficiency of the diode vs the selenium?
For a complete tare down and full repair, see: *Jim Burns*
You should replace those caps. All of them!
Yep, but no money for it. None of them leaking.
@@JordanPier and yet, it has a full complement of new tubes... Go figure.
I would have changed ALL of the paper CAPs before an alignment. And, I wouldn't have messed with those coils unless absolute necessary!
Jordan, You said you are in La Mesa, CA. Several years ago was your shop in North Park/Kensington area ? If so.... I brought a Magnavox FM43 in for service that had Silver Mica disease.
We were just west of Kensington. I think I remember your set. More than a couple transformers were effected.
Too bad you can't put in a "Rap" filter
Amen to that!!! ❤ Rap is CRAP!!!