This scope cart seems to have a TM503 mounted in it: https://www.ebay.com/itm/264244929767 Was that an official mod, or was it just something the owners did to their scope cart? thanks, -Kurt

I've had a 1502 project for a while, and I'm finally getting some time to work on it. I've already done the cap/resistor battery "mod" as suggested on the TekWiki, and I have 14.4 volts on the "BATT"

Is there much to be gained by powering up my 465B with a variac, lamp dimmer or similar arrangement? It popped (shorted) its 1200 ufd C4429 at power on recently. This cap does not have much head room

i have 3 and have decided to move 2 on. They take up space I can no longer afford to support. The 7854's have no plugins and I'm asking $275 ea w/ carts. I also have a 7613 with a 7L12 that i have not

I have a hopeless , dead, case 2215A . It turns on , but that is all she wrote. Nothing else is alive. It has bean left in wet garage for long time and some components are clearly rusted out. I just h

Hi folks, I have a TDS3024B scope that refuses to boot. The only thing that shows up on the LCD is a blank white screen. Obviously, the backlight is on but there is no video. I've ruled out an LCD iss

This "lot of 3" item on eBay includes a couple of 5A1xN scope plugins and a "liquid crystal driver" plugin: https://www.ebay.com/itm/LOT-OF-3-TEKTRONIX-PLUG-IN-5A18N-DUAL-TRACE-AMP-5A15N-AMP-LIQUID-CR

With the collector supply set to AC, the collector voltage set to 0 volts, and particularly with a lower volts / division selection (1V, 0.5V) I notice a horizontal line about 1 division wide appearin

I am looking for a graticule lens for my Tektronix 360 indicator module. This is the old scope module for the 160 series with the round CRT. The 310 scope used the same part. Tektronix part #331-0027-

I am looking for some pins for the 172 Programmable Test Fixture. If anyone has some that they would be willing to sell, please contact me off-list bob@... Thanks! 73 Bob Krassa AC0JL

Chuck Harris wrote on 12/9/2019 10:00 AM:<snip> <much good info snipped> Someone in the group may have an older Superior Electric Variac languishing on the shelf for want of a replacement brush (onlin

Hello to the group--not exactly a Scope problem, but I was given a TM-503 that was full of plug ins. There is a 508 counter that does have the preselector daughter board installed. It is not working.

I have a 184 that partially works: the 10MHz signals along the 10HMz, 100MHz, and 200MHz, and 500MHz. The problems are in the 1us and 5us chain. Among other things, there is some poorly done rework in

Hi, I have been playing around with my 7A15A's, in different 7603 Mainframes, and have a 'jittering' or 'flickering' of the 4V Calibration signal. The 'jittering' is a movement, always to the left, of

The 7L5 manuals say the Dot Frequency should reset to 0.000 kHz at power on. There have been previous posts about this not happening, but no mention of a fix. I have personally seen two 7L5s, includin

Got a 576 that was supposed to be in working order but it seems it is not even close. After rebuilding the collector supply, I managed to get sweep again on the tube but the tube is VERY dim. I have a

hi, Has anyone had experience with the Tek 3c66 Carrier Amplifier Bridge plug-in for the 560 scope ? It appears to amplify signals from variable impedance transducers & sensors, such as strain gauges,

The dot frequency displays with the decimal point in the wrong place below 10 kHz (Fine mode on); the displayed number must be multiplied by 10. The 7L5 tunes correctly to 9.750 kHz, for example, but

Hi Everybody, Chance had it that most of the time I spent on my 7L5 went into fixing, calibrating, adapting... rather than actual use. But this is about to change as I'm (hopefully) done with all the

Hi folks, been long time,My 465 has no horizontal sweep, vertical still working, single dot in center of screen with no input. Vertical line or trace in center with input signal.Checking Horizontal Am