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across the bench [season-2] the electron strikes back

niles ipc8pro - 12.jpg
testing threshold voltages with a variac, obviously nothing connected to the output receptacles.

niles ipc8pro - 13.jpg
all the informative numbers in attendance

i didnt map out all the voltages but this gives a general idea of what the ipc-8pro perceives vs what the light emitting diode indicates.
 
niles ipc8pro - 18.jpg
drawback to opening the chassis and the new mains plug is ready

niles ipc8pro - 19.jpeg
quick thermals although no load attached

niles ipc8pro - 20.jpeg
not much to see here
 
sae-7125 said:
this system must be set for 110v optimum which is slightly outdated (110/220/440 vs 120/240/480)
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thats highly outdated. Radios and such in the 1950s were generally specified at 115 or 117 vac. This doesn't look older than 1980s vintage. I wonder if something has gone off-value and has the settings screwy.
 
jvc xlmv303 - 5.jpg
some interior views

jvc xlmv303 - 6.jpg
all the primary boards on one side

jvc xlmv303 - 7.jpg
power input on the other side with microphone sockets up front
 
not sure I've ever seen a stand-alone VCD player before. Only ever seen VCD/DVD or VCD/Laserdisc players.
 
How well are those self-stick zip tie things holding up? I've not had much luck with them staying in place.
 
gadget73 said:
How well are those self-stick zip tie things holding up?
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they seem to be somewhat functional but i would not depend on them for keeping bare high voltage wires from touching. using solid core (insulated) wire tends to be a better choice.

if there is any kind of mechanical upward tension, even a small amount, it doesnt take long for the adhesive mounting points to become worthless. i also have had little success with adhesive mounted anything over the years. if the metal still has some machine shop oil soaked in, all bets are off.

a simple solder strap wins the day for a metal chassis wire harness retaining mechanism, aluminum hobby boxes need slightly more heat. brazing or mig/tig welder also worth considering. although easier to just drill a hole and use a bolt stem for zip tie mounting... lots of better options vs dollar-store example in this cary preamp.
 
Pretty much my experience, was just curious if perhaps these were better quality than the ones I have previously encountered.
 
surface area of the adhesive pad makes a big difference although once again if there is any consistent upward lift from what is being tied down... time makes fools of us all, including adhesive mounts. a painted interior or some type of surface that loves adhesive chemical would be ideal.

good observation with the cary photo's either way (+1).
 
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