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I've never seen a set screw with a Torx recess. The other larger screws that look like Phillips are most likely PoziDriv. There have been lots of good suggestions here on how to remove a tight set

If you single step the youtube video (. and ,) the dots show up at very precise places and in the readout area. The issue is most likely in the readout blanking or sequencing. Service manual describes

Many thanks to all who responded; I have some work to do on this DISPLAY switch!!!!!!!!!! Lew

Ok, I just tried turning off channels 1 and 2 and turning on channels 3 and 4 and the sparkling is still there. I did notice when I play with the v/div and sec/div knobs, it does the sparkle thing as

I've *never* seen a Tek knob with a torx set screw.-Dave

I have been watching this thread and have a related problem.? The main tuning knob on my Kenwood TS-940S cannot be removed, as the set screw has a ruined hole and when I try to turn it, it's frozen.

Because there are two grubscrews, remove the good one that did loosen, apply penetrant to the stuck one, both on it and also down the hole of the other one. Find a good high strength bolt about an

I was dubious about the talk of "junker" TM-500/5000-series/7000-series plugins, but stayed silent on the principle that a person saying that a thing can't be done should not interfere with the person

Tom Lee wrote: Japanese built electronics was full of them. It was cheaper than using a molded body. I have about a half million of them from a vocational electronics course that was shut down a few

Torx was developed in 1967 and patented in 1971. Bristol was in use during WW-II [email protected]> wrote:

The +50v regulated supply is used in the +5, +15, and +130v supplies. If +50 is excessive, it can cause the problems you describe by overcoming the difference amplifiers, that is Q919 in the +15v

Ozan, I measured voltage at pins 1-2-7-8 Here are the results: 1. 4.1202 8. 4.1172 2. 5.966 7. 5.986 And finally 5. -3.3835 R751. Side A: 29.955, Side B: -3.3835 There is a slight imbalance between

Hi Nenad, hi Stephen I have all the digits of the display off with no input signal, with a selector on "Frequency" and the "Timing" selector on "100 us" I have on the decimal point of the third digit

I use a small Torx bit to remove them. The Torx bits are tapered and you can usually find one that will fit into a striped allen screw. Press the Torx bit into the screw tightly so that it doesn't

I use lefty, counter clockwise twist drills. A tiny triangle file may work also. Model railroad hobbyists use the files. You may have to grind the point a tad., aldue

I would try some PT Blaster turn knob so it does not run out let sat for a day. Works great on rusty frozen bolts/nuts so far have not it damage plastic. gary g

Hi everyone, I've got a 7603 with no trace and an odd - to me at least - fault. The - ve rails are just under the - 15 and - 50v specified. The +ve rails on the other hand are at +18, +75 and +179v

As a follow up, I have a bag of no-name 3906s, so I tried a number of them. And now I'm leaning towards "cheap one hung low" transistors as the culprit. I pulled out another one, for instance, that

Chuck, All good advice. Personally, I guess the readouts really aren't that critical. I get used to not having any when using older scopes like my 585A! Maybe I'll just not worry about beyond checking

In the 500 series, there are no Torx screws anywhere AFAIK, rather they are Pozidriv.