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 Post subject: Model Number
PostPosted: Jul Wed 31, 2019 7:13 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
Posts: 20
Location: Ormond Beach Florida 32174
Can anyone tell me the model number of this radio? It is made in Hong Kong. I would like to locate a schematic for it.

Thank you.

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Sat 03, 2019 9:23 pm 
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Joined: Aug Sat 16, 2014 2:19 am
Posts: 1334
Location: Palos Verdes, CA
Steve - There is a photo of your Star Lite 6 transistor radio on page 150 of Norman Smith's book, Transistor Radios 1954 - 1968, but no model is listed, just that the radio was made in Hong Kong in 1965. There is another radio that was made by Star Lite that is similar to your radio and there is information available on the Radio Museum website that you can download:

https://www.radiomuseum.org/r/star_lite_trn_79trn7.html


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 Post subject: Re: Model Number
PostPosted: Aug Sat 03, 2019 9:53 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
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Location: Ormond Beach Florida 32174
Thank you SO much!
I can now begin to troubleshoot the IF section.

Sincerely;

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Sat 03, 2019 9:58 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 32418
Location: SoCal, 91387
I have one of those, just with a different badge. What is the problem with yours that you think the IF section is faulty? Usually that's the last circuit to be suspect in these.


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 12:59 am 
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Joined: Aug Sat 16, 2014 2:19 am
Posts: 1334
Location: Palos Verdes, CA
Steve - There was a recent eBay sale of your Star Lite transistor radio and it is a model TRN77 as it is printed on the box:

https://www.ebay.com/itm/Vintage-Star-L ... 7675.l2557

The Star Lite Model TRN77 can also be found on the Radio Museum website, but unfortunately, there is no information on the circuitry, but they do show a photo of the box. - Mark


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 1:36 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 9207
Location: Mountains of Mourne. Ireland.
This schematic for Rivera model RV62 should be the same.
2SA142 - 2SA141 - 2SA141 - 2SB135 - 2SB136 - 2SB136 - MD60
Schematic→ https://lh5.googleusercontent.com/-HD93 ... CN5036.JPG

Image
image: http://mikesoldradios.blogspot.com

http://mikesoldradios.blogspot.com/2011/03/riviera-model-rv-62-6-transistor.html

Greg.


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 3:32 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
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Location: Ormond Beach Florida 32174
Why I suspect the IF section?
Good volume, from the volume control to speaker.
There is various squealing when I turn the channel selector. No intelligent sound comes through though.

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 6:57 pm 
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Location: SoCal, 91387
Replace the 4 Electrolytic caps first, and the oscillation may disappear and be replaced by broadcast stations. If there is still osc after that, you can very slightly adjust the core in each of the three IF's to get them just below osc level. It's usually only one that needs it. Once you quell the osc, then adjust the others for maximum volume.

Electrolytic values in these sets don't have to be exact replacements. I've subbed 10 uF for 33 and 47, and vice versa. The only one you want to keep close would be the cap going to the VC wiper, which is usually a small value.

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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 7:05 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
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Location: Ormond Beach Florida 32174
I replaced 1 that was defective. I just paralleled the other ones. I will replace the rest of them and see.

Thank you!

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 7:40 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
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Location: Ormond Beach Florida 32174
I just replaced all of the lytics. I get some audio now.
BUT! There is a lot of static and a slight 'beat' every 2 seconds.

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 7:52 pm 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
Follow Richard's alignment instructions here...
viewtopic.php?p=3058875#p3058875

At times the Oscillator trimmer will be labeled OSC on the clear plastic Polyvaricon tuning capacitor.

Greg.


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 Post subject: Re: Model Number
PostPosted: Aug Sun 04, 2019 8:02 pm 
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Joined: Jul Wed 31, 2019 7:05 pm
Posts: 20
Location: Ormond Beach Florida 32174
Let me give this a try.

Thank you.

Steve


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 Post subject: Re: Model Number
PostPosted: Aug Mon 05, 2019 2:47 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 9207
Location: Mountains of Mourne. Ireland.
Follow the alignment instructions for this Sharp 6 transistor model 6H-103
https://www.kevinchant.com/uploads/7/1/ ... 6h-103.pdf

1st I.F. Transformer core (I.F.T. 1) is Yellow.
2nd I.F. Transformer core (I.F.T. 2) is White.
3rd I.F. Transformer core (I.F.T. 3) is Black.

AM Oscillator core (L2) is Red.
AM Oscillator trimmer (C4) is on top of the clear plastic Polyvaricon tuning capacitor.

AM Antenna coil (L1) is the Litz wire that's wrapped around the ferrite bar antenna.
AM Antenna trimmer (C3) is on top of the clear plastic Polyvaricon tuning capacitor.

Sharp 6H-103 core colors...
Image
6H-103 from top to bottom.
Red.
Yellow.
White.
Black.

Greg.


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