Hi.

Aquired an old Beocord 9000.

Have fixed "the usual" problems: Dead segments in the display and non-existing rubber-belt.

Plays back fine but I have a problem when it comes to calibration. Auto REC-CAL works but left channel does not sound ok when recording.

I have tried to calibrate via the servicemanual but I am missing a couple of points:

3-1: Azimuth correction: OK

3-2: Play back level (Dolby level): OK (580 mV in both channels using A.N.T. Audio U04103-70A calibration tape

3-2: PPM calibrated OK

3-4: skipped

3-5: 15 kHz Boost skipped

3-5: Cal detector and oscillator calibrated to 2.95V

3-6:17 kHz oscillator ok

3-6: 7 kHz oscillator ok

3-6: Bias amp and filter: Minimum deflection is not the same on the 2 channels - approx 8V and 7.5 V. Cannot calibrate to same voltage

3-7: Bias right ok

3-7: Bias left ok

3-7: Right sensitivity ok

3-7: Left sensitivity NOT ok - NO STORE LED lights up all the time - cannot adjust 3R230 to turn off NO STORE LED. Could IC201 (4066) be the culprit?

3-9: When checking the control diagram I get values like 10-10-4-10-5, meaning left sensitivity is far off specs.

Studied the diagram (PCB3) closely, but don't know where to start the fault finding.

Bonus info: All capacitors on PCB3 has been renewed. Trimmers checked and seems fine. All connectors has been resoldered. Using TDK SA-X for recording. Tape transport and heads cleaned and looks fine.

Anyone has an idea ?

Best regards Thomas.