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  • swander commented on framistan's instructable Repair Your Clogged Coffee Maker2 months ago
    Repair Your Clogged Coffee Maker

    capresso 464/465 are same model but 465 has no heat (sort of) and only uses $60 thermal pot to keep coffee hot. If it just clicks, I bet the heating unit is open or the 156F/30C thermo limiter is bad. see if there is continuity between the 2 ends of the heating unit found under the bottom plate (5 screws and pry opposite the 2 tabs) and also on the 2 resistors in series. The way these work is the water is drawn into the silicon tube and passes a one way check valve and the C shaped heating element that also heats the hot plate. when the water reaches its own level past the check valve in the up tube, it stops and starts to heat up.. Once it expands/boils (1000W heater on these bad boys) it expands back against the check valve which closes and the water is boiled out the up tube into the...

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    capresso 464/465 are same model but 465 has no heat (sort of) and only uses $60 thermal pot to keep coffee hot. If it just clicks, I bet the heating unit is open or the 156F/30C thermo limiter is bad. see if there is continuity between the 2 ends of the heating unit found under the bottom plate (5 screws and pry opposite the 2 tabs) and also on the 2 resistors in series. The way these work is the water is drawn into the silicon tube and passes a one way check valve and the C shaped heating element that also heats the hot plate. when the water reaches its own level past the check valve in the up tube, it stops and starts to heat up.. Once it expands/boils (1000W heater on these bad boys) it expands back against the check valve which closes and the water is boiled out the up tube into the coffee grounds filter. The process keeps repeating itself until there is no more water. The heater then goes very hot with no "coolant" and trips a thermo switch shutting off the cycle. The 156F/30C thermo switch is located right on the heating element and I bet it is serviceable as many use the same principle. It looks to be bonded or brazed on but it may just be pressed in there. You can also sub in a glass pot onto a 465 model by removing the heat insulator plate that is under the heating coil, its just a standoff so the heater does not contact the base of the pot! The 464 may also have a 2 hour timer on the heater element via the PCB which may not be on the 465 PCB (or more likely not soldered in) that keeps the hot plate going at a reduced rate (maybe through the 2 series resistors? (warm1 and warm2 on PCB?) I found that with the hot plate insulator plate removed, the coffee stays hot much longer in the glass carafe as it is heated as it brews, not only from the percolation.

    many coffee makers have provisions for charcoal filters placed at the base of the water tank, in the little hole at the bottom. They act as filters for particles/beans too as well as removing 85% of the chlorine in US tap water. They look like little square or barrel shaped tea bags. and are about $1 a piece in 6 packs.

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  • swander commented on Stan1y's instructable Repairing a Small DC Electric Motor3 months ago
    Repairing a Small DC Electric Motor

    I had a cassette deck motor go out on me (left it on for like 3 days and the motor always spins) so it seized up and blew a 2.1A fuse The motor was hard to turn so I took it apart and found some sort of hot glue had melted and ran into the rear bearing, and locked it up! Ok, cleaned it up, put it all back together, spins nice but no action. Tested DC voltage, tested continuity between wires (continuity), brushes are touching the commutator. Whats going on? Are my windings open? Where are the winding ends, on the commutator, seperated by the small cuts in it? . I cant measure those as they are buried under the armature cores...Im stumped. its a permanent magnet motor, 12vDC

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  • Cassette Tape 1101 - an in Depth Look Into This Analog Tape Recording Media

    C-xx was the run-time of the entire cassette, so 1/2x was the run-time of one side. The last cassettes made were in C-100 or C-110 to emulate the length of a commercial CD, while the C-120 (IIRC there was a C-180 too!) was the joke of tape lengths as they were made with such thin tape it would either roll up on your capstan or stretch over time. The newwer C-110's were made of better base stock. Some of the cassette singles were no more than C-10's with either huge reels or just a slit for the window as there was almost no tape in there, at 1 7/8 (1.875) IPS, there may have only been 46 feet of tape in there. While a C-90 would have had over 421 feet wound in there. Want to make a cheap test tape? cut tape exactly 18.75 inches past leader and tape it to the other leader so you hav...

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    C-xx was the run-time of the entire cassette, so 1/2x was the run-time of one side. The last cassettes made were in C-100 or C-110 to emulate the length of a commercial CD, while the C-120 (IIRC there was a C-180 too!) was the joke of tape lengths as they were made with such thin tape it would either roll up on your capstan or stretch over time. The newwer C-110's were made of better base stock. Some of the cassette singles were no more than C-10's with either huge reels or just a slit for the window as there was almost no tape in there, at 1 7/8 (1.875) IPS, there may have only been 46 feet of tape in there. While a C-90 would have had over 421 feet wound in there. Want to make a cheap test tape? cut tape exactly 18.75 inches past leader and tape it to the other leader so you have leader+18.75 inch of tape+leader. Now tape a constant noise like static on it using the record pause button at the front of the leader and letting it record right into the tape portion for the full 18 or so seconds. Now run it on your deck through your computer using "audacity" music recording app, using the headphone to mic patchcord (aux cord) record this and you can use the time grid on the bottom of the audio track to give its exact time. adjust the screw in the capstan motor inside your deck or the trimmer pot on the PCB (newer SONY decks had it like this) and once you get it to read exactly 10 seconds, you can record a constant keyboard "C" note on the 10 seconds and use a guitar tuner to tune the next deck you are adjusting by turning its screw untilk the guitat\r tuner reads a perfect "C". Dont want to do all that, buy a test/tone tape on Ebay for 4 bucks.

    we bought them for 20P in Philippines, that was 1$US. They were all PARI (Friend) brand and all had record pops in them as well as the needle drop at the beginning. No big deal, our rigs were cheap boom boxes for the BEQ rooms unless you bought the ultra hi end hi-fi stuff at the "Far East Trader" electronics base store.

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  • swander commented on flywoodkb's instructable Hot Wire Foam Cutter1 year ago
    Hot Wire Foam Cutter

    Made one, but burned out my transformer? For some tips on the dimmer circuit, I made mine but had no variable out of the dimmer. I looked at schematic again and realized even with AC, you need the BLACK wire out of the black and white AC plug cord wires to go to the black wire of dimmer (I used a 15A fuse in line from a car stereo) and then red out to the transformer Primary INPUT, (green to transformer case) then the white AC side goes into the other Primary side input. if you do it backwards, you wont have any adjustment. Also, measure your resistance of the cutting wire. I used stainless wire from a 1/16 cable strand bought for .17/foot at Home depot. You get like 16 strands in there of some pretty small gauge wire. single 40AWG strand broke under stress so we upped it to 3 strands....

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    Made one, but burned out my transformer? For some tips on the dimmer circuit, I made mine but had no variable out of the dimmer. I looked at schematic again and realized even with AC, you need the BLACK wire out of the black and white AC plug cord wires to go to the black wire of dimmer (I used a 15A fuse in line from a car stereo) and then red out to the transformer Primary INPUT, (green to transformer case) then the white AC side goes into the other Primary side input. if you do it backwards, you wont have any adjustment. Also, measure your resistance of the cutting wire. I used stainless wire from a 1/16 cable strand bought for .17/foot at Home depot. You get like 16 strands in there of some pretty small gauge wire. single 40AWG strand broke under stress so we upped it to 3 strands. The resistance of the 1 strand was 2.2 Ohms. and we were using the 24V output of a multi tap transformer out of a cassette deck. Variable 1-24V worked great but it died after about 5 minutes on 12V. The transformer was cooking when I felt it! I should have used the 11V (it had 11, 24 and 44V) tap and varied that or just use the proper transformer. Even a 6V lantern battery straight wired to cutter generated enough heat to slice the foam.

    I have used professional ones and they have a pre measured nichrome wire with loops on the ends. They attach over pins on the arm and base. The arm is a semi rigid spring steel 90 degree bend that bends down to accept the wire and rebounds to apply tension. This makes it quick to disconnect the wire and run it through a closed hole in the workpiece to make interior cuts. I cut about 60 "Coors Light" cursive letter signs for a contract with this rig and never burned a wire. 600F is optimal cutting temperature. They also rectified the AC to DC to make it a lot safer for the end user as I was touching the wire more than once.

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  • Dirt Cheap Ignition Retard for Turbocharged Engines for Less Than $100.

    5 at the cam and 10 at the crank is correct as the crank turns 2x speed of the cam on a 4 cycle motor. Cam cog is always bigger than the crank cog with a timing belt or chain.

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  • How to Measure AC Voltage Using Multimeter

    it has also been suggested that you apply the probes to the work piece black (common) first then red, and remove them red, then black. Think: "Black first on , last off"

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  • swander commented on Hashem_Mehyar's instructable DIY Cassette Deck Drive Belts1 year ago
    DIY Cassette Deck Drive Belts

    rubber bands work too, (although not in the case of long car audio belt apps) but they are too stretchy to provide a rock solid wow and flutter ratio (warble) but they do work to determine of the deck is salvageable. They often break after a few months of sitting though. Once you get it to work with a rubber band, you can use the string method to determine what size belt you REALLY need. string up your belt path tight with a single strand and cut where they overlap. Measure the total length, deduct 10% to compensate for stretch and go online or to a electronics store and buy a generic replacement belt. Usually about $5. Old belts slip, even if they look good from a visual standpoint, they get stretched and due to their low elastic design, cannot recover to provide the proper torque to t...

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    rubber bands work too, (although not in the case of long car audio belt apps) but they are too stretchy to provide a rock solid wow and flutter ratio (warble) but they do work to determine of the deck is salvageable. They often break after a few months of sitting though. Once you get it to work with a rubber band, you can use the string method to determine what size belt you REALLY need. string up your belt path tight with a single strand and cut where they overlap. Measure the total length, deduct 10% to compensate for stretch and go online or to a electronics store and buy a generic replacement belt. Usually about $5. Old belts slip, even if they look good from a visual standpoint, they get stretched and due to their low elastic design, cannot recover to provide the proper torque to the drive wheels.

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  • Making A Fridge Compressor Into A Vacuum Pump

    ISO 10 is the usual oil in consumer refrigerators and the pump i pulled from a 14 foot kitchen fridge (already cut by scrapper for coils) had a stroke of 4.99 cm3. You can look up all sorts of specs by google the pump number. Mine was an EMY-60HER. Sure R134a is bad for environment, but i think its the same stuff that is in duster cans or air horns. I think it is not regulated when used outside the HVAC biz?

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  • swander commented on Lorddrake's instructable Rare Earth Magnets From Old Hard Drives2 years ago
    Rare Earth Magnets From Old Hard Drives

    I believe the one failsafe taped screw is somewhat standardized to eliminate the chance the drive vibrating ALL the screws loose and coming apart in a computer. 10K rpm drives open in a case and then breaking is not good news for anyone.

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  • The simplest FM transmitter... Without coil/inductor

    Remember, in the US, FM offset is odd numbers so some electronic tuners wont be able to find an even frequency such as 93.2. Im sure a variable could be used to tune it to a vacant frequency.

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