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Old 08-01-2019, 12:40 PM   #14
dicky96
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Default Re: Philips 234e problem

Quote:
Originally Posted by R_J View Post

What does'nt make sense about the U705 circuit? Pin 5 (LX) is the output which connects to a coil and then to Q492 fet, Q492 is likely a switch that turns off part of the circuit during standby.
What didn't make sense is I thought source or drain of Q492 was directly connected to U705 Pin 5 LX..... until I was driving home from the workshop and it suddenly occurred to me that Q492 was probably a switch (like you also think) and was not connected directly to U705 but via the inductor instead. Then it did make sense Hence post +11

I'll check the other voltages like you suggest. Thanks for your continued help

Rich

Last edited by dicky96; 08-01-2019 at 12:44 PM..
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