Part Two! This time I set out to assemble the main chassis, with some surprises along the way. It seems that this will be at least a 4-part series, but I'm not complaining. I want to enjoy this as much as I can.... and I hope you will too!
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Join Team FranLab!!!! Become a patron and help support my YouTube Channel on Patreon: http://www.patreon.com/frantone
- Music by Fran Blanche -
Frantone on Facebook - https://www.facebook.com/frantone/
Fran on Twitter - https://twitter.com/contourcorsets
Fran's Science Blog - http://www.frantone.com/designwritings/design_writings.html
FranArt Website - http://www.contourcorsets.com
Love your electrolytic capacitor replacement. Neat.
Hello Fran. This is the best youtube channel I have seen. I like watching all of them.
This heathkit rebuild reminds me of evenings spend in my high school physics class in the early 70's putting them together.
🛩🚀🛰🥇🛰🍵🕸🕵♀🦿👁🦴🧠👏💫💥💯😇📺📽⏭◀⏮📶▪🏁🪛⚙🔩🔭🪝📍♣🗣⚙💯💥
Oh Fran, everytime I turn to your channel I just can't get enough you. Yes, we fans love watching and listening to what you do, but you are a breath of fresh air. You're so easy to be with, your a natural, no airs. you're funny and I love your giggle. it's like having you in my livingroom just chillin and learning and discovering. You are one of a kind and I'm sooooo happy I discovered you. Apple Juice and Frankenberries next Monday at say 4pm? Okay, great!
When I was a kid, it was a butterknife for flatheads to hook up my Atari to the TV. A pair of pliers served me pretty well too.
Just wondering if the engineer that invented the slotted screw design ever saw a Pozi one? ps love the replacement electrolytic Fran 🙂
That C7 capacitor didn't lose a drop of electrolyte, and with a few tricks it would have worked 100%, and certainly better than those three crappy Chinese capacitors.
Hi Fran first I loved the videos on the Heathkit IT-12
I am in the process of restoring one and noticed I have the same Transformer as yours does and I live in Australia 240V ac could you possible share the page you had on the wiring of the transformer for 240v and not 120v
Thanks Chris
Heathkit cool wished they still made.them
The book Tandy's Money Machine documents how RadioShack leveraged their tube business into what it was. They got them so cheap from OEM's that they could have made huge profit on each. Instead they offered them cheap with free lifetime replacements.
Too bad I can't smell the burning resin of the solder! My favorite smell!!
Fran. What a total joy. Thank you for building me a time machine! This young arts leaning electronics geek had huge fun with Heathkits at school and incendiary soldering at home! Your attention to detail and complete enthusiasm was mine too! Just wonderful
What a Nice tee shirt Line…
I got a HealthKit stereo in 1967 the same year I got married. Very much enjoyed the assembly. A few years later my house was broken into and my stereo was gone.
Great work
ooooh, oooh!! I have a story about this one. I bought an assembled one of these at a hamfest around 1982, so I didn't have the fun of assembling it. Around 1995 I was using it to trace a single through a Fluke 6071 signal generator, a $12,000 device! The problem was a lack of phase-lock on the delay-line filter plane. The manual set for the 6071 is like six two-inch-thick gray manuals. Very thorough, except for the delay-line manual, which just gives up on trying to explain how a delay-line filter works, and just says "the adjustments on this board are all factory only." Drat. The signal generator is useless if it won't lock, so I gotta fix it. The schematic for this plane is like 2×2 feet, and complex, and all interdependent, so the integrators are connected to a sample-hold with four pots, and those feed back to a cascade of wobbleizers and misc passive components and diodes. totally unlike any other stage I'v ever seen. So I start randomly probing around the circuitry with the signal tracer and many places sound like squash-clap, squoosy-thunk, not sounding right at all for something that is supposed to lock up on the signal. At the fifth spot I probe, the squishy-clunk settles down to deep silence and the signal generator locks like it should! A normally-bad side effect FTW! I measure the cable and it measures something like 55K and 80pF. I replace the probe with a Heathkit resistor decade box and a Heathkit capacitor substitution box. Unbelievable, but it only locks with the resistor box at 68K and the cap one at 100pF !!!
Of all the possible resistor-capacitor combinations that a cable could have, this Heathkit length of RG-58 and stray capacitance just so happens to hit the sweet spot. Amazing.
The tracer is still on my test bench and still gets a lot of use.
Regards,
George