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I just took some measurements of the broken part : - Overall length : 8.6mm - Outside/largest diameter of the tapered/conical part : 6mm - Height of the tapered section : 5mm - length of the threaded

OK, I found the picture. I think you are right but not sure of exactly where to look at the moment. You have full sweep yet it does this, somehow that ripple is getting to a lower level stage. I could

Keith, I think the Q1418 collector waveform is taken at 10 V/div, not 20 V/div. The 15 V(unreg) comes from the bridge rectifier I suppose, where the schematic says ~~ 24.5 V. You didn't show or

If a transistor has been degraded due to reverse Vbe, you can actually restore it's Hfe by applying high base current to heat up the junction sufficiently. Might be fun to try. On Friday, June 15,

Hey Renee, I was just reading on sci.electronics.design about transistors degrading over time when they get alot of reverse Vbe. Actually they were talking about exceeding the rating or the transistor

Hi Tom, Thanks for the kind words, I am glad you like my repair topic on EEVBlog... not everyone can stand my long winded posts.. seems Sir "oldway" certainly did not, as you might have read over

Hi Bruce, I think what you really are asking is what I ask every time I am going down to Beaverton: "why can't the Country Store be open when it is convenient for me because I happen to be in the

Yup, about 49 years that I recall, when it was at Sunset. It sure gives you time to stew over the ones that got away. Bob.

I think it's always been like that, even in the good old days. I recall it was only open Saturday mornings way back, with similar limited hours. The store is only a small part of the operation - they

Fellow Tekkies, I've gotten curious about the rhyme or reason to the RAMS store's limited public hours (two Thursdays a month, less than half a day). Thoughts on this? Thanks much. -- --- Bruce Lane,

Hi Vincent, The EEVblog 2215 post, that you gave us the link to, is excellent! The little part you need would be quite simple to make (and to improve upon) if one had some accurate dimensions from a

You didn't listen to what I said about the electrolyte. Isopropyl alcohol does tremendous "corrosion" to a styrofoam cup, but nothing to a piece of aluminum. The corrosive, to copper, electrolyte in

Chuck “If you need some evidence to back my assertions, grab any old bag of electrolytic capacitors that have been sitting on the shelf for years, and measure the capacitance. They will all measure

Dennis, This from a Maintenance Note from June 74: //S-6 SAMPLING HEAD INTERMITTENT OUTPUT In the past the S-6 Sampling Head has had an Intermittent problem in the Hybrid Bridge Circuit. The center

The input (loop thru) signals J10 and J12 are 10k from another pin, "O". The output signals at 16k and a diode drop away from another pin ("J" ->- J15 or J16 ->- "M"). I feel like this should be

For my fading problem I think I have narrowed things down to electrolytic (or is it wet tantalum?) caps, C4327 5uF 150V, and C4006 4.7uF 35v (leaked some). C4327 was arcing sometimes when powering on!

output on reading dead. How did you check for a change in resistance, Dennis? Craig

Inside the S6 Sampling Head there are 3 PC boards. One connects to the socket inside the 7S12, and nothing else. One is the strobe board, and the third is the preamp board. They are interconnected in

$100 for a 067-0587-02 calibration plug in is a steal. Craig

my scope has the vacuum tube rectifiers - I am pretty sure the CRT is OK because I have gotten it to run for a bit and it makes a fine display. For now, I'm inclined to blame caps - specifically the