I’ve been using the WBT solder on all my Tek repairs and have had zero issues. But I bought my 1/2lb when it was $50 cheaper. And still have over half of it left.

Hi Jim. Always glad to encounter someone using tube scopes in this day and age. I design and troubleshoot with tube scopes as well, although I often reach for the 2465A. Now it would be hard to find

The handbook for the scope should tell you its input impedance which will tell you what probes it can use. Typical scopes have 1 megohm input but not all. Probes can provide voltage range extension

Jim The Tek catalog from March 1967 is what you need. I've had one for years and its one of the best single references for the 500 series stuff that you will find. I see its available on Tekwiki -

Hi, everybody. So at some point I will take the plunge into vacuum tube audio, and according to George Lydeck on this group, the Tek 535A is the best scope ever for tube audio work.  Now, I figured

For AudioPhools, it also MUST contain micro ground meteorite powder gathered in the dark of the moon  by stygian witches. :)       Bruce Gentry, KA2IVY

Never could find a product specification PDF... "Halogen free flux" is about all. I can say I have used it on assorted Tektronix ceramic strips, successfully. (Re a 575 mostly, few other odds and

Nice to know it exists. I wouldn't have thought to look for audiophile solder! I wonder what else is in it? <david.w.holland@...> wrote:

I give you ... not 2%... not 3%... but 4!%, yes four whole percent!.. :-) https://a.co/d/5nPeVdH And if you don't like

The problem is that tin-lead-silver alloys with 3% or more silver is unobtanium now; nobody makes them any more, likely because of limited demand caused by the cost of silver. If you want it you'll

I am using a similar mix but with 3% Ag, because the Tek service manuals specify a minimum of 3% Ag for use on the ceramic terminal strips. -- Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg,

Barry, Clean J/P3032 ends. The coax wire and socket can be dirty even though they look clean. The switch for CH2 that is connected to the collector of Q3031 labeled 7 could be dirty. Mark

Barry, Correct. High voltage multiplier. Mark

My 547 still has it's original roll. Other than requiring two (such an unreliable machine!) tube replacements, it has never required a component replacement.

Yes without transistors is fine. Craig

Channel 2 will trigger on Channel 1 and External, but it does not trigger on channel 2. This is what I am working on next!

It started working. Not sure, probably an intermittent problem.

I assume high voltage multiplier.

Craig, I had already removed all of the transistors from the boards. Do you want the boards without the transistors? I can provide the pots. Barry

If you would prefer the ease of use of tin/lead/silver solder, you should look for Sn62Pb36Ag2 solder. Kester, AIM Solder, and ChipQuik all make it. Digikey has Kester and ChipQuik in stock. Mouser