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My KT-815 Recap (nudies)

jheu02

jheu02

AK Subscriber
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Listening to my KT-815 now after an (almost) complete recap, some jazz and it sounds gooood! :music: Mainly used Nichicons, but also Panasonic ECQs for the 1uF/50V 'lytics and some WIMA 1uF polys for bypassing the PS caps. Kemet .1uF caps are also bypassing some in the audio sections. Went with a lot of the suggestions from the TIC, but didn't increase all the values listed, nor to the extremes of some of the suggestions.

The bonus is I didn't fry anything while doing all the (de) soldering. :banana:

Unfortunately, there's always a downside...forgot to order 3 caps, 2 of which will upgrade the audio output. Doh! Also, the IF board doesn't have an access panel to get at its caps, so I couldn't do it either, though I have the caps for it. I really don't want to have to re-string the dial cord, so the question is:

How would I go about pulling the board without messing the tuning? I could loosen the set-screw on the cap shaft, but what are the odds I could get it back on in the same exact position? I've also thought about using a dremel and cutting an access panel in the section of the bottom that I'd need to get get an iron in there. The problem I see with that though is possible metal shards or dust going unnoticed and shorting the tuner out. Any other thoughts?

Thanks,

John
 

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This thing as two I/Fs (double down conversion) to get the pulse count detector rate down to reasonable (1979) levels.

On the A/F chain caps, which ones? Are they upstream of both the fixed output and variable output amp ?
 
ericson38 said:
This thing as two I/Fs (double down conversion) to get the pulse count detector rate down to reasonable (1979) levels.

On the A/F chain caps, which ones? Are they upstream of both the fixed output and variable output amp ?
Click to expand...

Not being an electronics tech by trade, I'm not familiar with all the abbreviations used so not sure what you're really asking. A/F? just can't decipher as it's late. The mods I did are listed here:

http://www.fmtunerinfo.com/DIY.html#KT-815

That should get you started anyway.

John
 
Hey-my hat's off to you, haven't done anything to mine yet (into vintage Goldwings too). I meant audio frequency chain.

Thanks for the link-
 
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