Who has a CTI 678xx driver board?

[yaddatrance]

Does anybody have a CTI 678xx and can take a picture of or get info off the board? I'm specifically looking for a closeup of the resistors/caps right next to the 3886 so I can identify resistor R33 (displayed as problem 1 below). If you can read the value, that works too! I'm guessing "203" aka 20K, but I want to be sure before I replace it!



Less importantly, I'm also curious what other people have for the values of resistors off the AGC, displayed above as problem 2...

[fluff]

I will have a look Yadda and take a photo, but I can't do it til Friday earliest.

Is that OK ?

Fluff

[yaddatrance]

That'd be just fine, this is on my list of "projects to do"

[fluff]

I have one of those lists too ! I think mine's broken ! Every time I look at it , it swells !!

You should see the pile of laser bits I have with a project in mind. But... I have to earn a living too.

Fluff

[Junktronix]

On one of my 678xx drivers which is configured for a 6800HP:

R33 is labeled 1503
R52, R51 and R19 are all labeled 1000 and I see 3K across the 3 in series

I also noticed that the one of my DT-40Pro drivers is nearly identical to the 678xx driver

[yaddatrance]

Thanks Junk! Now to hunt down a 15k resistor...

Fluff, can you measure those 3 resistors on the bottom on Friday
if you get a chance? I'm looking for some empirical data...

You guys are great!

[Junktronix]

I think 1503 is 150K. I measured around 70K, but the reading is slowly increasing, possibly because there is a capacitor across the resistor.

[yaddatrance]

150k? That makes sense where it is, that'd be a gain of ~11...