Mezmerize DCB1 Building Thread

diyAudio Chief Moderator
Joined 2002
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There is a K170 next to those three LEDs. Measure how many Ohms between its first and last leg when the power is off. Normal range no more than 50 no lower than 20. Also measure how many Volts between first and last leg of the nearby IRFP9240 when the power is on. Please verify its not a misplaced IRFP240.
 
diyAudio Chief Moderator
Joined 2002
Paid Member
Measures 100 ohms, I did have to remove the two 100 ohm and 47 ohm resistors as I'd bought 1/4 watt versions. Could I have damaged the pcb?

That 100 Ohm completes the circuit to ground for the K170 current source energizing those three LEDs. You can verify that the PCB connections are still good around it if one of its legs has continuity to the K170 pins 2&3 and its other leg has continuity to ground.