KLH Model 21 found at Goodwill today!
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Hello everyone today I found at Goodwill (work) a KLH Model 21 on the shelf in the electronics section in the store its kind of in rough shape as its missing the bass control knob and the grille cloth is coming loose and its got some lavander colored paint splatters on it but I figure for $7.99 one couldn't go wrong with such a classic piece of electronics history. So anyways I would like to know a little more about this unit as far as when it was made and a little bit about how it works and also as to where I could get a replacement knob for the bass control and how I could go about cleaning up the paint spatters on the unit. Any help and information would be appreciated.
Thanks, Levi Pictures are posted below. |
I Google-searched it and found 7,840 results. Including one on Shopgoodwill com that sold for $60. You got a nice employee discount!
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I have used a product called "goof off" successfully to remove latex paint splatters without damaging the underlying wood finish on older radios... I suspect that it would work ok on the KLH.
jt |
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Well I replaced the original 2000 MFD 30V Power Supply Cap in the radio with a 2200MFD 50V capacitor and its still has a 60Hz Hum coming out of the speaker and still no audio out of the speaker from the tuner. So what should I check next in the circuit that could be causing my issue? I also tried posting this in AudioKarma but for some reason when I went to post it it wouldn't post it would act like it was going to post the thread but then it would wouldn't actually post anything.
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I would suspect that one or both of the diodes in the rectifier circuit could be shorted or have very high reverse leakage... you can get a manual here from Phil's old radio site:
http://antiqueradio.org/KLHModelTwentyOne21FMRadio.htm Thanks again to Phil Nelson for his wonderful site, jr |
KLH built some very nice stuff. Our shop saw a lot
of it being 20 miles from Cambridge. Also piles of H.H. Scott that was 5 miles away. Anyhows change ALL the lytics first. I remember a few of the stereo ones going DEAD in one channel & that was it. ( 30 yrs ago ). Another thing that may be it is if it uses ua703 IC's in the IF they were trouble especially on Scotts sets. In any case when its running again you will wonder what all the hoopla about digital is. 73 Zeno:smoke: |
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Try the link again. Perhaps the download is a bit slow, but it works fine here.
http://antiqueradio.org/art/KLH21ServiceManual.pdf . |
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It's a 27-page PDF file. Must be some trouble on your end.
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