I have one that was made by Tek (has a Tek serial number). It has a single, purpose built Tek PWB in it, which has been numbered "670-8715-00" in Sharpie. The two trimmers in mine are Bourns 386

Hello all, I had someone do this with a Mazda RX-2. The Mazdas of that day and age had an amp meter in the dash. There was a 50 amp main fuse under the hood. The wiring for the amp meter ran

I recently worked on a larger rotary switch on a piece of an old Fluke calibrator. The dried grease can really make those shafts quite hard to turn! The HP 8640B has a similar issue with its band

It tells me that something is drawing too much current. Generally, it's a tantalum capacitor.  The tantalum may NOT read a dead short, only some do.  It could read low, draw an amp on a circuit

It just needs to be better than the thing you’re calibrating...and it doesn’t take much to beat the accuracy of an analog scope timebase. I adjusted my 184’s crystal oven with the help of my

Colin, The pots are Bi Technologies MODEL 72 3/8” Square Single Turn Cermet Trimming Potentiometer https://www.mouser.com/datasheet/2/414/72-3497.pdf Looks like any jelly bean trimmer would

LOL

I changed the 2 caps, as someone suggested. I’ve rechecked the voltages, and they are all good. I’ve also re-cleaned the sockets. And nothing has changed. I’m waiting to modify the JAMMA

If you can loosen the coupler on the switch, perhaps the pot shaft can rotate?  That might narrow it down. Harvey

On Fri, Jul 31, 2020 at 10:41 AM, Eric wrote: Interleaved answers. > > I have done a cal on the one that I have and it was a weird one. On mine > it did need some adjustment. I think mine is just

Gents, Thanks, all. I really don’t know if it’s the pot, or the combined switch, that is frozen. One or the other. I can get spray into the pot, but it still won’t move. The rotary switch on

I have done a cal on the one that I have and it was a weird one. On mine it did need some adjustment. I love the build quality of the 184 and the ability to use double time marks + trigger. Some scope

I can not identify any BNC connector via a number, and don't have a FG502, but I have thousands of BNC connectors here and could probably locate a duplicate. Could you send photos of the front and

It's on tekwiki, the last entry in the TM500 section.

Someone please provide the locations where these documents are available or actual links to the documents. It is not helpful to talk about the documents and not link to them. Larry -- Best

If those are Clarostat pots, I have had good success just disassembling, cleaning, and reassembling those. Thanks, Barry - N4BUQ

Be extremely careful when drilling into potentiometers. You will almost always drill into the resistive wire or element and ruin the pot. I cannot stress this enough. Gary

I'm currently restoring a few TM series modules and I found one of the BNC connectors in my FG502 function generator has a damaged center contact. Does anyone have a 28JR200-1 BNC connector in good

It's worth building, if only partially. As designed, it allows you to check AC voltage and phasing, bulk supplies, power transistor beta (not directly), and provides a +5 and +/- 15 volt general

Does anyone know any more about this item? It has the ID# 067-1201-99 and I have the Tek "manual" for it as a pdf. There was also another document which was termed "Construction Note". Did Tek make