Discussion in 'Yamaha' started by mr_light, Jan 8, 2013.
Had the same problem with a Kenwood KR-7050 last month and it turned out to be the speaker relay.
The load (resistance?) I am trying to duplicate with resistors is: 5 series pairs of bulbs (each is 14v 80ma) in parallel attached to a 28V DC source. I also understand you can't measure the resistance of a bulb when it's off. Help.
I am planning on trying a 20ohm 20Watt wire wound load resistor in parallel with my string of LEDs. I am hoping 20 Watt is a high enough power rating.
Use ohms law, R = V/R. Measure the voltage drop and the current of the bulb and you can figure out the resistance when on.
with your original lamps in circuit measure the current draw either directly with an ammeter or over a known resistor then work out the extra load necessary for the circuits to work ..
or just stick with the proper lamps .. you wont be saving the planet much by using led lamps .
Measured bulbs cause a voltage drop of 26.7V to 23.8V drop of 2.9V. Current (assuming I measure properly) is .22mA. Still not sure how to calculate resistor value and power rating.
over what value resistor did you check voltage drop ?
Just the resistance of the bulbs I'm trying to replace with resistors.
If I wanted just approach this in terms of SAFE experimentation, with the idea of using the smallest load that will drain off excess current at shutdown. Where could I start in terms of resistors and what steps could I test?
@avionic: can I have your CR-2040 list? I am considering refreshing/upgrading phono stage caps and the big power banks.
Yes I can attest I had the same experience.
That list is long gone..If you have a 2040 in front of you. Make your own list.
Welcome to AK BTW...Start a seperate thread for your 2040.
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