Greetings Per Anders!

Here is my QSXM2 preamp section voltage check report.

Test environment:

Input shorted

Power applied to left channel only

IC1 (OP07C) inserted. IC5 not inserted.

B&K model 391 DVM

V+ at X3: +15.002V

V- at X3: -14.993V

Actual voltage readings in (). Questionable results have “!” added

DZ1, 6,96V (6.870v)

DZ2, 6,96V(6.698V)

DZ3, 7,08V (6.606V)

DZ4, 7,09V (6.617V)

R1, -9,5mV (00.00mv, input is shorted to ground)

R6, 491mV (492mv)

R7, 438mV (800mv)!

R8, 5,85V (5.633v)

R9, 5,88V (5.590v)

R10, 5,86V (5.551V)

R11, 5,90V (5.643V)

R12, 4,80V (4.575V)

R13, 4,83V (4.619V)

R14, 200mV (320mv)!

R15, 299mV (241mv)

R16, 5,64V (5.384V)

R17, 5,61V (5.391V)

R18, 5,64V (5.327V)

R19, 5,61V (5.360V)

R20, 5,64V (5.409V)

R21, 5,61V (5.441V)

R22, 5,64V (5.330V)

R23, 5,61V (5.274V)

R24, 508mV (254mv)!

R25, 518mV (262mv)!

R26, 1,65V (811mv)!

R27, 9,15V (14.058V)!

R28, 3,65V (203mv)!

R29, 9,12V (14.030V)!

R30, 3,62V (185mv)!

R31, 1,68V (823mv)!

R32, 1,56V (550mv)!

R33, 1,58V (540mv)!

R34, 926mV (44mv)!

R35, 926mV (53mv)!

R38, 834mV (117mv)!

R39, 855mV (71mv)!

R42, 325mV (430mv)

R43, 319mV (351mv)

R44, 321mV (447mv)

R45, 319mV (514mv)

R46, 316mV (561mv)!

R47, 323mV (500mv)

C3, 6,46V (6.100V)

Vbe, T1 580mV (632mv)

C4, 6,40V (5.970V)

Vbe, T2 550mV (553mv)

C19, 5,28V (6.453V)!

C20, 5,30V (6.440V)!

H1, 1,82V (what and where is H1?)

PREAMP_OUT_L, <+-0,2mV, changing with temperature fluctuations and air movements

(TP1 -240mv)

(J1 -13.5mv)

(preamp side of R93 lifted -182mv)

DC-ADJUST_L, -5,66V, can go between +12-13V to -(12-13)V depending of balance. (fixed and steady -14.311V)

Extra DC Voltage readings to ground:

T1 BC560 collector 5.839v

T2 BC550 collector -5.803v

T13 BC550 emitter 3.822v

T14 BC560 emitter -3.674

T15 BC550 emitter 3.720v

T16 BC560 emitter -3.650v

C17 412mv

C18 -700mv

Junction R50 and R51 -17mv

Thank you!

Dan