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So this is wrong? Its acutally tip negative? Im confused now.
I guess if the original power supply says tip negative, this should be right
I would say that the power supply is the wrong one for the unit. And the damage was done because it was the wrong supply, not because of someone plugging it in to 220V (which is probably not possible because the plugs are different).
So unless you are 100% positive that is the original power supply, locate one that is correct for the unit, not one that is like the one you have.
Originally posted by Enzo
I have a sign in my shop that says, "Never think up reasons not to check something."
Well if it works then it's good.
Possibly there are different schematic revisions or someone used the incorrect symbol for the DC jack on the schematic.
Originally posted by Enzo
I have a sign in my shop that says, "Never think up reasons not to check something."
Very frustrating when thre described conditions are ambivalent.
What 'worked'?
The power supply itself?
The schematic clearly shows the tip "positive".
If you have a power supply that is tip negative, it is noty the correct supply.
The device worked and therefore also the power supply.
Its a universal power supply so if I turn the plug around, the polarity can be switched from center positive to center negative or the other way around.
I used the polarity with this symbol:
I plugged it in the device (I removed the batteries first) and the device is working.
I can try to switch to tip positive, but can I damage the device if the schematic is wrong?
If you have doubts, use your meter. Find out which pin of the DC input jack goes to ground.
I don't think this question was answered by the OP. Answer this by using ohms meter to confirm which pin on DC input jack goes to ground. Once that is answered then we will know definitively what is the middle pin's polarity.
Edit: Yes something is a miss here. I believe the original power supply part is DA-36 and it is tip negative. Perhaps the schematic is the misleading factor here but definitely confusing.
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