#1758

[@KeritechElectronics]

A nice unit for sure. A teeny tiny fix and it's go... I like the claw tool, could use one myself. Indeed a thing of beauty, joy for ever.

[@danblankenship5744]

Nice generator. Personally, I would point a thermal camera at the circuit to see if any of those dipped tantalum caps are slightly warm.

[@IMSAIGuy]

Not a bad idea

[@quirinodina]

I have cleaned lots of that kind of rotary switches and the best way is to disassemble all the switch and clean with cotton bud and IPA one contact at the time, btw good job !

[@warplanner8852]

Ahhhhhh! The dreaded "gold fingers" and the "bump switch" that are the bane of existance for 7XXX mainframe and 46X and 48X owners everywhere! They drove me batty on a 7A26 vertical amp. It's an acquired skill but you eventually get good at it!

[@zdzisiek1979]

Ładny generator . Pozdrawiam

[@joeteejoetee]

ProTip for spraying around corners: Insert 1-2 inches of Teflon insulated wire the OD of the ID of your spraying tube, and heat the outside until soft and then bend the tip 90 (or any) degrees and then let it cool/harden. Extract the Teflon wire from the kink-free spraying tube and voilla!

[@nickcaruso]

i sometimes think contact cleaner followed by a blast of compressed air takes the curse off. keeps the solvent from sitting in the plastics and maybe leaving residue or crazing it or whatever.

[@monteceitomoocher]

Can we ever forget the servisol curse!, i was wincing a bit at solvent on that irreplaceable switch block actuator.

[@SeanBZA]

You need to tilt the board, so the cleaner washes out the dirt by gravity.

[@robinbrowne5419]

Tektronix stuff is actually worth fixing 👍 (But we can't blame Imsai Dog's hair for this one :-)

[@jspencerg]

The TG501 provides markers(pulses and/or sine) up to 1GHz. Another good one to keep plugged in.

[@glasslinger]

You have a later production unit than mine. Mine has the old fashioned individual LED type readout digits. Some of the segments are burned out so there are some frequencies that take a bit of figuring to guess what the actual frequency is. They are a nice generator for general purpose use.

[@herbertsusmann986]

Looks like most of those DIP ICs in that thing are for the frequency counter as is the 1 MHz xtal.

[@charlesdorval394]

Just wondering, any particular reason you went for contact cleaner instead of control cleaner?

[@Amir-kz6yq]

6:58 what is this tool called?

[@IMSAIGuy]

spanner wrench. I don't think the one I show is sold anymore but here is one: www.amazon.com/Neewer-Professional-Spanner-Repairing-Stainless/dp/B00J5F73GA

[@Amir-kz6yq]

Thanks Mr. ImsaiGuy. My Kenwood radio has a similar nut that needs such a tool

[@fredmitchel1236]

Wow...amazing that generator level seems flat as a function of frequency...and that is what it supposedly designed for... I suppose for VHF radio...I don't think the output can be mondualated or swept. But you could just twist the freq. knob...and measure the ampliude response of some circuit or network.... I am glad the little Tek...can still be nice tool... And amazing you didn't have to or maybe play the cap replace game.....or could there soon to be tantalum cap short..

[@jimomertz]

You sprayed contact cleaner while it was powered on? 😱

[@fredmitchel1236]

Great solid L-C oscillator ... On the variable cap...I bet the fewest plates are the 200 Mhz...set...so it has at least 3 C-L combos....maybe even more...like 3 caps...and 6 inductors...six ranges Ah ha.. Look it up...just look at range switch 10 ranges... Go figure... And to get into receiving range..attenuate that output... And that is boring Fred and IMASI Guy knows Thanks for fixing it

[@tvelektron]

Always a bit afraid this kind of "magic juice" Spray could do any harm on the long run. I am thinking of softened or destroyed plastics but also of quick dust build up to oil left behind...

[@fredmitchel1236]

So glad you deferred the cap RR game.. Mushrooms??...lol

[@jimhall9360]

Deoxit on those switches has brought 2 HP oscilloscopes back to life for me. Time will tell if I " won the battle, but lost the war" I've read Deoxit can damage vintage wafer switch's fenolic, but is it harmful to modern PCB's?

[@98xjdriver]

I recently sold one of these on ebay, i let the smoke out the first time i turned it on. I didn't want to take on another project

[@fmashockie]

No! God forbid you used contact cleaner on a vintage Tektronix piece of equipment! It works for everything else, but suddenly turns evil and destroys only vintage Tek gear! (says every old Tek gear head 😂). Awesome grab! You see these a lot referenced in Tek (and some HP) scope service manuals as equipment required for calibration. I recently scored an oscilloscope calibrator - the CG5011 in a TM5003 mainframe, which is the next generation to the TM500 series that you've got there. It basically is a pulse generator, calibrator generator, and time marker generator all in one. But no leveled sine wave generator. So I'll have to keep my eye out for one of these or similar. What did you grab this one for?

[@IMSAIGuy]

$200 for all this kzbin.info/www/bejne/a2qoe6KFd66Uo6M

[@kpnconsulting8739]

The cover is wonky because the stupid little plastic bit that locks it in place has broken off. Why Tek went to that design from their earlier one baffles me. But that's why it came with the packing tape.