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 Hotpoint model L55FC
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 Return to top of page · Post #: 1 · Written at 6:02:29 PM on 13 January 2018.
JamieLee's Gravatar
 Location: Clare, SA
 Member since 27 March 2016
 Member #: 1894
 Postcount: 510

I recently acquired a wooden case hotpoint radio, the chassis has model L55FC although the C isn't clearly defined but it looks like a CT

The Valves are 6J8G, 6SK7GT, 65Q7GT, 6V6GT, 5Y3GT/G and that is all that is listed on the paper stuck to the inside of the case, although there is a 6BE6 hiding behind one of the RF cans!

The case is wooden. Does anybody know anything about this model and where I might find a schematic? I have a funny feeling it has been modified at some stage?

Hotpoint L55FC
Hotpoint L55FC
Hotpoint L55FC
Hotpoint L55FC
Hotpoint L55FC
Hotpoint L55FC


 
 Return to top of page · Post #: 2 · Written at 7:14:54 PM on 13 January 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6686

The Hotpoint L55FE has that line-up.

I've emailed its schematic and notes to you.


 
 Return to top of page · Post #: 3 · Written at 8:00:39 PM on 13 January 2018.
JamieLee's Gravatar
 Location: Clare, SA
 Member since 27 March 2016
 Member #: 1894
 Postcount: 510

Thank you GTC! Much appreciated!


 
 Return to top of page · Post #: 4 · Written at 8:12:41 PM on 13 January 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6686

Always happy to help however I can.


 
 Return to top of page · Post #: 5 · Written at 10:54:31 PM on 12 February 2018.
JamieLee's Gravatar
 Location: Clare, SA
 Member since 27 March 2016
 Member #: 1894
 Postcount: 510

Hey Guys, bless you all!!! You wouldn't believe this (but you might) I stripped it down to bare components, chassis upside down in my spare

room and proceeded to snip out the little circuit board pictured, then I snipped both ends of all of the wires leading to the mystery 6BE6

valve, then thought "what the heck" and plugged in the speaker, attached a wire to the aerial post, other end to the longwire antenna, then

got out my trusty dim bulb testing device and through this I powered it up and hey presto! MUSIC!!!! 5CS Port Pirie loud and clear, even got

some shortwave reception, so quite stoked actually, all the valves must be good, the caps are the old black paper types and 2 x red

cardboard 8μF electrolytics all still in circuit and the set working reasonably well, I never expected that after fiddling no end with that blasted

basket case Dominion which won't even offer half a crackle!!! Some radio's are just nice and others bad juju I guess!

So now all I need to do is restore the cabinet and re-cap and check resistors and this one's going to be a real beauty!

By the way my old man told me a good trick for gluing down old veneer that's come adrift... Add glue between the veneer and cabinet and

use Duct tape stretched over the curvy corners to hold it down! Didn't think of that, great idea, should work a treat! Cheers!!!


 
 Return to top of page · Post #: 6 · Written at 2:38:39 PM on 13 February 2018.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 2012

I guess someone tried to use the 6BE6 as an RF amplifier and failed.

It's good you got it going, now just the restoration and it should be fine.


 
 Return to top of page · Post #: 7 · Written at 2:52:34 PM on 13 February 2018.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2369

I guess my earlier post about this went missing, but it looks to me like that 6BE6 was wired as a 2nd mixer to make a double-conversion superhet and eliminate the images on the shortwave band.

I recall seeing a R&H or RTV&H article on how to do just this. By Maurie Findlay I suspect.


 
 Return to top of page · Post #: 8 · Written at 2:57:13 PM on 13 February 2018.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 2012

Yeah... I thought there were more posts earlier... wasn't there a schematic attached with a double-conversion mod from America?

Maybe a few things were lost during Brad's database work.


 
 Return to top of page · Post #: 9 · Written at 6:17:53 PM on 13 February 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5254

I did see the mod posted.

I just tossed (along with others) total 7 resistors from an STC D150 very predictable do not leave any 500K or 50K resistor unchecked: The highest for one 500K was 720K. Those two resistor values would have the highest attrition rate across sets.

The black Axial's will be paper types & often crack & short: Replace. I have never replaced one of those black rectangular Mica's faulty.

Marc


 
 Return to top of page · Post #: 10 · Written at 7:05:59 PM on 13 February 2018.
JamieLee's Gravatar
 Location: Clare, SA
 Member since 27 March 2016
 Member #: 1894
 Postcount: 510

Cool, yes I intend to do just that. Only question is I have .5 and .05μF ones are .47 and .047 ok or is it wise to piggy back .01's and .001's to

bring up to the correct value? I have done that before being a little pedantic, not sure if it's necessary but it's not hard to do. I'd be happy to

restore the double conversion if I could do it neatly and effectively, the original one was a bit howdy doody!


 
 Return to top of page · Post #: 11 · Written at 1:26:17 AM on 14 February 2018.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 2012

No need for that.... 0.47 and 0.047 are perfectly fine.


 
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