Derek92994's 700 Ser II White Oak conversion

[derek92994]

Q1 test leads reversed

 

[laatsch55]

Darc, I gotta shit, shower and shave for date night..I'll be watchin from the bar, you're in good hands with Joe..

Leave red on the left, black on the middle..

 

[derek92994]

Darc, I gotta shit, shower and shave for date night..I'll be watchin from the bar, you're in good hands with Joe..

Leave red on the left, black on the middle..

Thanks bud, Enjoy

 

[derek92994]

Got the Iphone sussed out so can respond and post pictures much quicker now

 

[Gepetto]

Hi Darcy
For Q1 you should get readings approximating these. Q1 is NPN. Q1 pinout is B-C-E when looking at the face of the part with leads pointing downward.

B+C- means you plus probe is on B or base and your minus probe is on C or collector. That is the nomenclature below:

B+C- = 604
B+E- = 605
C+E- = 745
C-E+ = Open
B-C+ = Open
B1E+ = Open

Record your results in a list like this.

 

[derek92994]

Hi Darcy
For Q1 you should get readings approximating these. Q1 is NPN. Q1 pinout is B-C-E when looking at the face of the part with leads pointing downward.

B+C- means you plus probe is on B or base and your minus probe is on C or collector. That is the nomenclature below:

B+C- = 604
B+E- = 605
C+E- = 745
C-E+ = Open
B-C+ = Open
B1E+ = Open

Record your results in a list like this.

Thanks joe, im starting the testing now

 

[Gepetto]

Then after getting that list, do the same for the voltage reference VR1

For VR1 you should get readings approximating these. VR1 pinout is R-A-C when looking at the flat face of the part with leads pointing downward.

R+A- means you plus probe is on R or reference and your minus probe is on A or anode. That is the nomenclature below:

R+A- = Open
R+C- = 789
A+C- = 605
R-A+ = 672
R-C+ = Open
A-C+ = Open

Record your results in a list like this.

Good luck! Power off for all readings. Diode scale for all readings.

 

[derek92994]

Results: (For Q1)

B+/C- =554
B+/E- =560
C+/E- =1280
C-/E+ = Out of range (1)
B-/C+ = Out of range (1)
B-/E+ = Out of range (1)

 

[derek92994]

Results: VR1

R+/A- = 225
R+/C- = 231
A+/C- = Multimeter Beeps (Like when you touch probes together)
R-/A+ = 224
R-/C+ = 231
A-/C+ = Multimeter Beeps

 

[Gepetto]

Results: VR1

R+/A- = 225
R+/C- = 231
A+/C- = Multimeter Beeps (Like when you touch probes together)
R-/A+ = 224
R-/C+ = 231
A-/C+ = Multimeter Beeps

You have a blown VR1. Needs replacement.

 

[Gepetto]

I recommend you cut out VR1 since it does not work anyway and retake the measurements on Q1. I want to see whether it is walking wounded or not. I am suspecting it may be but cannot tell with VR1 affecting the circuit. You are dead in the water until this is fixed anyway so it really won't put you in any worse of a situation.

 

[derek92994]

I recommend you cut out VR1 since it does not work anyway and retake the measurements on Q1. I want to see whether it is walking wounded or not. I am suspecting it may be but cannot tell with VR1 affecting the circuit. You are dead in the water until this is fixed anyway so it really won't put you in any worse of a situation.

Ok Will do

 

[derek92994]

I recommend you cut out VR1 since it does not work anyway and retake the measurements on Q1. I want to see whether it is walking wounded or not. I am suspecting it may be but cannot tell with VR1 affecting the circuit. You are dead in the water until this is fixed anyway so it really won't put you in any worse of a situation.

The Measurements on Q1, power off with diode scale? I have de-soldered VR1

 

[derek92994]

Re-take Measurements of Q1 using diode test on DMM

B+/C- = 556
B+/E- = 561
C+/E- = 715
C-/E+ = Out of Range
B-/C+ = Out of Range
B-/E+ = Out of Range

** C+/E- went from 1280 to 715 after removing VR1

 

[derek92994]

Tom Petty Playing on the Technics deck "I Won't Back Down"

 

[Gepetto]

Re-take Measurements of Q1 using diode test on DMM

B+/C- = 556
B+/E- = 561
C+/E- = 715
C-/E+ = Out of Range
B-/C+ = Out of Range
B-/E+ = Out of Range

** C+/E- went from 1280 to 715 after removing VR1

Q1 Appears OK which is good, VR1 is dead tho

 

[derek92994]

So far a Pico Fuse and VR1 is dead, where to from here?

 

[Gepetto]

So far a Pico Fuse and VR1 is dead, where to from here?

Do you have a variac and DBT?

 

[derek92994]

Do you have a variac and DBT?

God No

 

[derek92994]

I have a variable power supply but it only goes up to 24 volts