开云体育

Raymond

If this is the Siemens motor version, HP also used this motor in the 8640B signal generator so searching for replacement parts for that might reveal some possibilities. Thanks, Barry - N4BUQ

Hi Stephen, Did you look at the SMs at : https://bama.edebris.com/manuals/tek/465(2)/ and https://bama.edebris.com/manuals/tek/465/ Ozan

I meant to say "If no shorts elsewhere observed, check individual diodes in diode bridges". Since you're looking for shorts (not PN junctions) in individual diodes in the bridges, that's usually

Systems are not working well today. I'm not getting messages until much later than they are posted, so apologies if they are out of sync. Dave

I believe someone mentioned that the 465/475/485 family used the same fan motor. This got me scared, so I pulled out my 465B Service Manual to compare. I finally found the fan and the motor is listed

How is it broken? If it's a plastic part and it's not grossly deformed, it can likely be repaired to like-new condition at least when it comes to the functionality. If it's metal, probably as well,

Shorts in the power rails after the buffer circuits usually aren't able to cause blowing of the mains fuse. That's why I suggested checking the circuits as in my message about half an hour ago.

BTW, you’ll notice that I’ve replaced the 2 missing pass transistors with TIP35C’s. I checked the pinout, ans it seems to be the same as the MJE2801.

Yes Raymond, This is the fuse I’m talking about. Good pieces of advice, as usual. Thank you ?

On Thu, Apr 8, 2021 at 09:41 AM, Dave Peterson wrote: Interleaved, > Stephen, > > I don't quite have the equipment to scan the pre SN B250000 11x17 pages, but I > can take photos and look up specifics

Hello Joe, I use a capacitor checker from Mr. Carlson's Lab, and that works very well. As far as your list of capacitors goes, I have had very good luck with Good-All capacitors! I have checked many

I guess by line fuse you mean mains fuse. Assuming that's correct, I'd start by looking at the usual suspects for this 'scope family: See schematic dwg 12, ckt. layout in fig. 7.21: Bridge rectifiers,

Stephen, I don't quite have the equipment to scan the pre SN B250000 11x17 pages, but I can take photos and look up specifics for you. The A9 board has many board layout pages in the book. Each one

Hello, as I had initially planned my objective was to exchange all and every "suspicious" capacitor and these selenium rectifiers. Right now I have got a basically well operational instrument, but not

I finally started to electrically restore this apparently quite early 465. The 2 pass transistors have been replaced, as well as R1549, and C1549. Also, the 15V rail was shorted to ground because of a

Rebonjour a tous, WOW Perfect, I have never seen this VERY useful référence! VIVE LE GROUPE TEKSCOPE ! Jon

Sorry, RT1110, not R1110 Raymond

According to my info, the 2465 uses a Hall-element motor and the NTC is R1696 (page 262/323 in my SM), the 2465A and 2467 use a regular fan and a regulation circuit using NTC (not marked as such)

Thank you for confirming, Dave! And I agree with you that it's bad etiquette to hi-jack a thread; no matter what was my reason it was wrong. I regret it and I apologize to all that were offended by my