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John, Yes, please have a look if you have PDF schematics, that would make life a lot easier. Raymond

You could take the schematics to almost any Office Depot and copy them full size to a ThumbDrive. Then post them in the files area. 73, Dick, W1KSZ wrote:

Everyone - thank you very much for the pointers! I will attempt as described - a "spit and shine" cleaning, then checking rail voltages and ripple, then following the H?kan's article (special

How about our hero Hakan! He comes through with the best information on the planet, time after time! Also, a big 'Thank You' to everyone who contributes to all of the fine discussions that come across

I received an answer from SRS. They only supply schematics with paper manuals @ USD 110,-.... Raymond

OK, John, thanks. Raymond

I'm not at the computer that has the PDF's right now so I can't check. I know for certain I have the schematics in the printed manual but they're 11" x 17" which is too large for my scanner. I should

The L we are interested in is the inductance that the power supply presents to the power line. In the case of the 2465, that is very low, in the tens to hundreds of micro Henries. Insignificant, in so

Thanks a lot for that document Hakan, priceless.... Vincent Trouilliez

These scopes were made to operate over a wide temperature range. A thermistor's cold resistance can become very high at the low end of the temperature range, perhaps high enough to make it unlikely to

It's a known problem and I think it has been discussed here before. There were a few WW articles written on the subject. You can find them here:

Hi Steve: I can help you with your knob problem.? First, remove it and clean out any plastic residue from the skirt on the knob.? Then carefully apply a small stream of super glue around the inside

Thanks Chuck Help me here: You wrote: it would be chosen to have a capacitive reactance equal in ABSOLUTE VALUE to the inductive reactance of the load it switches. 1. Using the formula (with 230VAC,

Hi Chuck, Where does a shunt resistor go relative to the thermistor? I thought the thermistor was the only component in an inrush current limiter. Is that incorrect? Thanks, Barry - N4BUQ <snip>

A snubber capacitor is a capacitor, used in conjunction with a series resistor, to dampen, or eliminate the back EMF transient caused when an inductor abruptly loses its current source. They are

I have now seen two 2465 PCB blocks with a burnt-out on/off switch. The damage is caused by the arcing across the now-separating terminals, when the machine is switched OFF. Replacement is easy with

Hello, I am looking for a volts/div knob for my 485. Plastic has degraded and skirt is loose. Thanks! steve_tech@...

You can use some small flexible plastic tubing to locate the noise. Hold one end to your ear, and use the other end as a probe to localize the source. Michael A. Terrell

Vincent,? Try replacing the FET first and see what happens.? Sent from K5JLR

Hi Dimitri, Had a horrible high-pitch noise in the SMPS of my 2215, though was from cold, unbearable (I am only 40 so I still hear this kind of noises...sadly). Power rails were all spot on and ripple