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Messages - FenderDeluxe112Plus

#31
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 04:53:24 PM
Q9
Pos to collector Com to base .6760
Com to collector poss to base 1

Com to emitter pos to base 1.0018
Pos to emitter com to base.6780

Pos to emitter com to collector 1
Pos to collector com to emitter .8232
#32
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 04:44:36 PM
Diode check Q8

Pos to collector com to base 1
Com to collector pos to base .6489

Pos to base com to emitter .6536
Com to emitter pos to base 1.0033

Pos to collector com to emitter 1
Pos to emitter com to collector 1.0390
#33
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 03:41:23 PM
Cr39 anodeYou cannot view this attachment.
You cannot view this attachment. 
#34
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 03:36:46 PM
With com clipped to chassis.
C39 cathodeYou cannot view this attachment.

You cannot view this attachment. 
#35
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 03:12:45 PM
Apologies .0002 ohms for both readings.
#36
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 02:13:49 PM
You cannot view this attachment.

Test point pairs marked in red and green.
#37
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 02:07:53 PM
Continuity between cr39 anode and Q1 base.
Continuity between Q8 collector and cr39 cathode.
#38
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 28, 2022, 04:13:57 AM
Thanks g1. Have just double checked the dc voltages.

Q1 base 01.23 vdc
Q8 collector 03.29 vdc

Q2 base -01.20 vdc
Q9 collector -02.74 vdc


#39
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 27, 2022, 04:23:09 PM

Q8
E-00.03
B-00.09
C 02.92

Q9
E-00.04
B 00.02
C-02.59
#40
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 27, 2022, 04:07:35 PM
Q1
B01.22
C39.22
E-00.02

Q10
B01.22
C39.20
E-00.02

Q11
B-01.19
C-39.47
E-00.05

Q2
B-01.19
C-39.44
E-00.05

All without speaker load
#41
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 27, 2022, 02:58:21 PM
-0.042 cr14 cathode with load
-0.044 cr13 anode with load
0.016vdc u1 pin6 with load
#42
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 27, 2022, 02:31:38 PM
-0.036vdc at cr14 cathode and cr13 anode without load.

00.22vdc on pin 6 of u1 without load
#43
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 27, 2022, 10:19:36 AM
Can confirm same sound with guitar plugged into power amp in, but sound is slightly quieter.
#44
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 20, 2022, 02:58:46 PM
Just fired the amp up- still making the same noise.   :(
Bulb did not brighten any further with speaker connected.
#45
Amplifier Discussion / Re: Fender 112 Deluxe Plus
May 20, 2022, 12:26:30 PM
Some very slight fluctuations. And has increased since opamp change.You cannot view this attachment.

Out of interest what would be considered acceptable dc?