But your R27 value in the bad board is 6.2 kohms (blue-red-black-brown with thick red tolerance-ring), not 560 ohms.
No..... It´s not @Plott
It´s Green, Blue, Brown, Black, Brown, whitch is 5, 6, 1, 0, 1% 😉
You´re reading it from the wrong end, or missing the first green.
Can´t remember the thick red (old Philips "MRS" metal film)?, but it is either temp., or voltage code. (Probably 200volt)
Note, that these have 6 color bands....... not 5.
https://www.ebay.com/itm/1675612832...o9sFJQDsvDRMV2cjGCoWtAEM4eDbeXx8aAvdkEALw_wcB
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Oh... I missed the green... 6 ring resistor... mea culpa. Yes, the thick red is temp....
But with 560 ohms he should get 5 mA @2,9 volts across R27, he writes 0.5 mA.
But with 560 ohms he should get 5 mA @2,9 volts across R27, he writes 0.5 mA.
Have checked Q5, 6, 7 & 8 and everything ssme to be correct with both boards matching.. I'm wondering why there is -5.5vdc coming from pin 7 on the OP Amp rather than -0.9 on the board that works... Any ideas?
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