I just swapped a brushless DC 12V fan on my LG RC185 VCR. Please excuse the abomination that is the MacGyvered contacts. Forgot to order new these:
So that’s my excuse. Anyway…
Is it okay to let the cord lean/rest against capacitors and whatnot?
Hey, I’m applauding your MacGyver work. Sometimes it’s what you gotta do.
Capacitors are not supposed to generate heat, nor should the wires, so it’s not an issue, but it’s not best practice either. if possible, use one of these,
There is a screw nearby. No need to buy it, make one from a suitable piece of scrap plastic
I wasn’t sure. But web says this…
As electronic devices become smaller and lighter in weight, the component mounting density increases, with the result that heat dissipation performance decreases, causing the device temperature to rise easily. In particular, heat generation from the power output circuit elements greatly affects the temperature rise of devices. However, in applications (switching power supply smoothing, high-frequency power amplifier output coupling, etc.) where large currents also flow in capacitors, the power consumption due to the loss component of the capacitors can increase to the point that heat generation by the capacitors cannot be ignored. Therefore, the temperature rise of capacitors must be suppressed to the range that does not affect the capacitor reliability. An ideal capacitor has only a capacitance component, but an actual capacitor also has an electrode resistance component, dielectric loss, and an electrode inductance component
Also, hard to tell from the picture, but the heatsunk parts must get hot and are pretty close…
Did something similar! Thanks! Used shrinking tubes (without shrinking them. Just for isolation.).
Yes, but, if possible, I would cut the wires and recap the ends to make the connection fit better.
Thanks! I’ll let it be for now, at least until I get my hands on those caps/ends that I cramp on, so that they’ll sit properly in this:
There could be heat…you can buy sticky backed ziptie loops at places like home depot. Stick one inside that case wall and thread a ziptie through it to hold the wires off the board.
There could be heat
My first thought was “you’re wrong, ‘caps’ (Capacitors) don’t generate heat!” But yeah, That’s pure based on the title. In the picture the wires seem to rest against a heat-sink. Either way, it’s best to tie them out of the way.
I actually don’t know much about electronics, but I have a speaker system where capacitors are known to get hot then the sound starts to crackle after about 5 hours.
Here’s some info from the web though…
As electronic devices become smaller and lighter in weight, the component mounting density increases, with the result that heat dissipation performance decreases, causing the device temperature to rise easily. In particular, heat generation from the power output circuit elements greatly affects the temperature rise of devices. However, in applications (switching power supply smoothing, high-frequency power amplifier output coupling, etc.) where large currents also flow in capacitors, the power consumption due to the loss component of the capacitors can increase to the point that heat generation by the capacitors cannot be ignored. Therefore, the temperature rise of capacitors must be suppressed to the range that does not affect the capacitor reliability. An ideal capacitor has only a capacitance component, but an actual capacitor also has an electrode resistance component, dielectric loss, and an electrode inductance component
Good idea! Thanks! 😊
