cornet 2 LED turns green without the red = solved, now smoking resistors?

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robert123

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Solved the problem from my last post which was a simple little error, The rectifier socket was soldered in wrong and the LED was back to front :oops:.Now the fun continues with smoking resistors @ 221L and 220L. Getting a little frustrated now and thinking i should have just keep this thing stock. Anyone got any thoughts?? Reisitors are Kiwame 2W and yes they are the correct values.

« Last Edit: 28 Jul 2011, 12:06 pm by robert123 »

poty

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What do you mean about wrong soldered rectifier socket?  :o
I think you should begin with measuring the voltages from the power supply.

robert123

  • Jr. Member
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The socket was not soldered into the correct position in relation to the octal socket. Voltage tested out fine

poty

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Could you be more precise - what voltage have you checked?
How much is the voltage across the resistors?
I think if you had mistake in the B+ rectifier - you may have several parts out of order. But it is only my guess up to now.

robert123

  • Jr. Member
  • Posts: 5
I Just changed out C207 and all is fine, I remembered i had to re-solder that cap in after i couldn't fit the sonicap next to it, may have over heated the capacitor. Heater voltage is 6.1 and all voltage are with in 10v+/-. I'll keep an eye on the 2 resistors that were smoking but they seem to test out ok, Got no spare 1.8k Kiwame.

Thanks anyway Poty!