dave_m
Veteran Member
... And after Monte Carlo we can spend a day or two on the topless beaches in Nice ...
That may be very appropriate as I will probably "lose my shirt" playing Baccarat at Monte.
... And after Monte Carlo we can spend a day or two on the topless beaches in Nice ...
If you can access the bottom of the board, that is fine. Be careful about locating the measurement points. The picture on the web page shows print through of the circuit layout, relative to the components identified. It is reversed relative to the component labels.
Hi
Some more points to check:
Banded end of CR7 ( should be about +33V )
Banded end of CR18 ( should be about +85V )
The points you've measured so far are great.
They verify that those parts of the board are working as expected.
Each measurement that you make will most likely lead to another
question. This is the method used in trouble shooting. It is much
cleaner than just making a big list and comparing voltages.
Make measurements with the black lead connected to the ground.
You might find a way to have this connection without having to hold it
by hand. This will allow you to use just one single hand for the
red probe. A typical TV repairman will use the "one hand in the
back pocket" method while working with a live circuit. In the digital
world we typically don't do that because of the low voltages we
work with. It is good to follow this method of the TV repairman
for working on monitors.
Dwight
Hi
Those are still reasonable values. We'll need
to look a little deeper.
I'll give you some more things to measure
later.
Dwight
Hi,
This is what I get :
(I hope I did it right for R6 & R7 / I have put the probes on the ends of both resistors and checked the voltage; is that correct ?)
- R6 :
0,36V
- R7 :
0,36V
CR4 (with CR3 shorted to ground) :
- BE : 12,36V
- NBE : 12,38V
CR5 (with CR4 shorted to ground) :
- BE : 12,00V
- NBE : 12,11V
CR6 (with CR4 shorted to ground) :
- BE : 11,82V
- NBE : 12,10V
Hi
With the power off, we will be measuring ohms, not voltage.
Do you have a closeup of the meter. I'll tell you how to set
the meter up for ohms.
Dwight
Hi
With the power off, we will be measuring ohms, not voltage.
Do you have a closeup of the meter. I'll tell you how to set
the meter up for ohms.
Dwight