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 Post subject: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Sun 09, 2018 8:18 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Jackson, TN
Hi all,

Picked up this cool little Channel Master on the bay. It seems to work fine, including the automatic tuning feature.

It has a chunk chipped out of a corner, for which I am planning to attempt a repair. I recently used some JB Weld Plastic Bonder which sets up in a deep black color. So if it is successful, I'll post a pic later, if not, it will never be mentioned again :lol:

Another interesting note. The seller shipped the radio with power on. I set the box on top of our stove which has a RF Noisy processor. The box started hissing and sputtering. :shock: My wife and I looked at each other and had a good laugh.

OK, so here's my question...
Can someone tell me how to remove the back? It seems to require removal of the winding key, which I haven't figured out how to do.

Also, if anyone would have an electronic copy of a service guide for this I'd really appreciate. I've already found a link to a Sanyo schematic which Gregg had posted sometime back.

Thanks, Tim


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Sun 09, 2018 8:29 pm 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 5955
Location: Norfolk, VA
Same as the Sanyo 10C-320 - Radio Museum may have a manual.

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Brian
"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Sun 09, 2018 10:24 pm 
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Joined: Oct Mon 26, 2009 10:02 pm
Posts: 7170
Location: Indianapolis, IN
Hey Tim,

Good looking radio & neat story about it coming to life on the stove !

Don't have this model yet, but I've seen both splined and threaded "key's", so best to wait to hear from someone who knows...

Gook luck with the plastic repair---please let us know either way how it turns out.

Looking forward to inside pics and a performance report once completed !

John


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 12:31 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 39596
Location: SoCal, 91387
My guess would be, if the smaller round inside the winding key is a separate item, try holding the key, and turning the smaller round CCW.

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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 4:19 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 18752
Location: Mountains of Mourne. Ireland.
E-mail Vlad, he speaks English.
http://antiqueradios.com/forums/viewtop ... 4&t=296805

Greg.

Usually they turn anti-clockwise - may be tight. Lol
Best to check first.


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 5:21 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Jackson, TN
Thanks all for the suggestions.

The knob rotates counter clockwise pretty easily, feel like reverse direction on a ratchet. Tried pulling, no luck. I don't see any way to disassemble the knob.

I'll be patient as I sure don't want to do any damage.

Sent PM to Vlad, hopefully he'll chime in.

Tim


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 5:33 pm 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 5955
Location: Norfolk, VA
IIRC, that back cover attaching wing screw has a retaining c-clip on the interior - it comes off with the back. Get it loose, and work the back off.

Panasonic, Sanyo, and Hitachi all did the same thing with some radios and those awful 8-track portables.

EDIT:

http://www.tabiwallah.com/radiowallah/sanyo/7sp1d.html

http://www.tabiwallah.com/radiowallah/h ... h667b.html

Pretty common to have the back screws captive..

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Brian
"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 10:19 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Jackson, TN
Got the winding key removed, it mounts on a split splined shaft. I was able to get a dental pick beneath cover to pry the key from the shaft. A few photos below for posterity.
Also, photos of the chip missing from rear cover.


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Mon 10, 2018 11:48 pm 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 18752
Location: Mountains of Mourne. Ireland.
Meet "Bondo Ed"...
page-2 viewtopic.php?f=4&t=236680&start=20

A pea size of hardener to a golf-ball size of filler. The stronger you make it, the faster it goes off.
Don't hang around and don't make it too proud as it can be a bugger to sand!

Greg.


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Tue 11, 2018 12:12 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Jackson, TN
Thanks Greg, very encouraging.

After what Ed pulled off there, my project should be like falling off a log :lol:

I am noodling out how to make a form to contain the inside section while getting just enough thickness that I won't need to do too much filing, grinding, sanding.

Tim


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Tue 11, 2018 12:50 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 18752
Location: Mountains of Mourne. Ireland.
De-grease the ragged edge with some alcohol or IPA - use an old toothbrush or small acid brush. Dry soon as some plastics can react/melt.

Cut a Coke can with a pair of scissors, it's ultra thin. Be careful of the razor sharp edges. Place a layer of sacrificial masking tape on its face (longer than required-tails). Bend/shape and wedge/tape in place, taller than required. Apply filler and shape.

Later - pull/peel your shuttering piece away with a pair of pliers. If it remains in place, you can smear the inside faces (overlapping joints) with a small about of Bondo. 3M Micropore Surgical Tape can be used if you are NUTS like me. Lol

:) Greg.

Other solvents...
viewtopic.php?p=2945921#p2945921

Girly nail files are great tools for this.
Use a low tack masking tape. You can make your own by dusting Johnson’s Baby Powder on regular tape.

Edit: You can also cut (Junior hacksaw) corner (shuttering) pieces from an old music cassette box - Super/Krazy glue in place, as long as you can close the case. Do a dry run.


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 Post subject: Re: Channel Master 6459 Signal Seeker, need hint...
PostPosted: Dec Tue 11, 2018 1:40 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Jackson, TN
Looks like some good ideas there Greg.

I like the idea of cutting up a coke can for some formable metal.

Tim


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