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How do the voltage readings on the collectors of TR 705 and TR706 compare to those shown on the schematic in both auto-magic positions?
As far as I can see, the circuit should work fine with 300 ohm resistors across the leds for PL5 and PL6 unless there is a problem with one of the transistors being leaky or not completely shutting off. Also check the base voltage on TR705 and TR706 in both auto-magic conditions.
There is another lamp PL7. Did you replace it with a led and bypass with another 300 ohm resistor?
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RE: Realistic STA-225 - by Mondial - 12-27-2016, 12:28 AM
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