May 26, 2015 #21 P peter g Member level 2 Joined Mar 12, 2012 Messages 43 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,618 Audioguru said: Then your pcb or LM317 is shorted from the Adj pin to the input or the output. Click to expand... hi, I checked for the above condition, but found no shorts.
Audioguru said: Then your pcb or LM317 is shorted from the Adj pin to the input or the output. Click to expand... hi, I checked for the above condition, but found no shorts.
May 26, 2015 #22 Audioguru Advanced Member level 7 Joined Jan 19, 2008 Messages 9,457 Helped 2,151 Reputation 4,302 Reaction score 2,008 Trophy points 1,393 Location Toronto area of Canada Activity points 59,721 If your "220 ohm resistor" is actually only 22 ohms then the current in the pot might be 57mA which might burn the pot if its resistance is set low.
If your "220 ohm resistor" is actually only 22 ohms then the current in the pot might be 57mA which might burn the pot if its resistance is set low.
May 26, 2015 #23 P peter g Member level 2 Joined Mar 12, 2012 Messages 43 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,618 Audioguru said: If your "220 ohm resistor" is actually only 22 ohms then the current in the pot might be 57mA which might burn the pot if its resistance is set low. Click to expand... will check resistor. post back.
Audioguru said: If your "220 ohm resistor" is actually only 22 ohms then the current in the pot might be 57mA which might burn the pot if its resistance is set low. Click to expand... will check resistor. post back.
May 26, 2015 #24 P peter g Member level 2 Joined Mar 12, 2012 Messages 43 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,618 peter g said: will check resistor. post back. Click to expand... unfortunately, the res checks good. i'am going to start over, make a new board use all new componets and will post results. meanwhile, thank you for your interest I really appreciate it. bye for now. pg
peter g said: will check resistor. post back. Click to expand... unfortunately, the res checks good. i'am going to start over, make a new board use all new componets and will post results. meanwhile, thank you for your interest I really appreciate it. bye for now. pg