Search results

Yep, I do the same. Only the genuine Hakko tips over here as well.

So, one mystery solved. New Hakko FX888D digital station on the way. The temp I had my old station set to is off enough that it's time to relegate it to back up duties or the scrap heap. Looks to be off ~ 50 degrees, at least according to my Fluke IR probe. Sheesh. Getting much better results...

Will check that out as well, thx!

Those pics helped as well Joe. I'll add a couple pics once the backplanes are reworked. Almost done with the first one. Looking much better to me at least :-) I'm in this for the long haul; any tips/constructive criticism certainly welcome and accepted. No worries at all.

It's an older Hakko FX-888 (before they went digital)... ~399 degrees Celcius/750 degrees F. I may have used the smaller tip for the wires that I used for the components (T18-D12) which would be 1.2 mm... too small for the wires perhaps?

I do appreciate the feedback and examples! I like Joe's tagline "Always working on making it better..." Ditto. Will pull backplanes are redo wiring. Thanks guys.

Will go back and redo, thank you!

Thanks Joe - will reroute; added to my list :-)

Hi Perry! Yep, trick of light. There's a black lead to each of those connections.

I do indeed. Will check those out over lunch. Appreciate your time as always.

I did pull one of the legs for R8L... same behavior. Bulb glowing on bring up with the control board attached, mV growing across F2. I assume I should reconnect that resistor at this point (?) - or, I can go back and simply measure the wire-to-wire connection points only if that's helpful?

Hi Joe - I think I did just that (?) For example, bias transistor on left backplane measurement: Multimeter set to ohms. Attached one probe lead (mini-pincher from the multimeter) to the emitter leg of the bias transistor; used the other probe lead (from multimeter) to measure ohms at the...

Morning Joe - Yes, bias transistor connected to rear Phoenix connectors. Ohm'ed out the connection of each bias transistor leg to it's corresponding Phoenix connector. Got the following readings: Left: C: 441K ohms B: 0.2 ohms E: 379K ohms Right: C: 441K ohms B: 0.2 ohms E: 382K ohms If...

No worries at all. The extra solder on the red wire was simply a bit more than I would have liked when soldering in from the rear of the backplane, but looks better to the eye than that picture. And yes, the backplanes are held down from the aluminum standoff and screw (from beneath) with a...

Hi Joe - RevG1 control board

Another view - wiring to bus bar

Control board, top and bottom:

Hi @George S. - Thanks for the suggestions. Bias transistors are clear of the P-straps, nothing touching there. Boards were cleaned, leads on the back planes trimmed nice and close to ensure no shorts. Top side high-res pics attached of those to start:

Hey guys - Been a while. Still enjoying the heck out of my WOPL'ed 700b... so much so that I wanted 2, lol. In any event, following the bring up routine for my new, full WOPL build, as follows: 1. Populated bottom row of transistors, floated star ground, bringup slowly on Variac w/ dim bulb...

It worked!!! ;)