Hi Tom Miller: You can buy a 3X voltage tripler made by New Tone Electronics that will fit in your 465, it is NTE538. Also, ECG538 is the same product. NTE bought out ECG. Mount the new tripler adjace

I am re-sending the data as the columns did not line up. Years ago a friend, Stan Griffiths, now deceased, passed on to me this Tektronix Blue paint formula. He called it Williamsburg Blue. He said it

Years ago a friend, Stan Griffiths, now deceased, passed on to me this Tektronix Blue paint formula. He called it Williamsburg Blue. He said it came from a commercial paint company but I really do not

Hi Tom: I have a large collection of 4XX series scopes and some have been used for parts. I have a collection of 3X HV voltage multipliers and I would offer you a known good one for $25 plus shipping.

Greetings fellow trekkies: I have been informed that my email address, that I included in my note of June 1st, had the email address truncated after the at (the shift 2 symbol). Please note the follow

Hi: I have no idea how that happened. Here it is again: reed714@... phone, after noon only714 838 6241

Hi Dave: Planes have been known to fly dreamers to Southern California. Maybe BCNU! Reed

Greetings fellow Tekkies: In a few days I will be 86 years young and I feel the limits of age slowly creeping through my joints. Years ago I bid on a number of Tektronix Oscilloscopes offered by the n

This is for Bruce, the owner of the 475 in trouble If you will connect a cap about 200 to 400 uF, read at least 400V from the center tap of the +50 V filter cap to ground and fire the scope up you mig

Hi Bruce: I have found that resistance checks are not a good measure of the reliability of any instrument. Here is what I would do. Get a DC voltmeter turned on, connect the ground lead to the chassis

Greetings: I hope everyone on this forum is remaining healthy! I am seeking a good CRT for a Tektronix 576 curve tracer. I have some cash but I would be willing to trade one of my completely refurbish

Hi Walter: I need a CRT for a Tek 576 curve tracer. Please write me if you have one or know of a source. Would any other CRT work? I refurbish Tek 485 scopes and I would be willing to trade a refurbis

Greetings fellow Tekkies: I am enclosing the formula for the Williamsburg Blue paint that Tek used on their 4XX series of scopes as well as some others. I am now on my third gallon of it and it has al

Tektronix had an inductive collapse transient problem from the coil of K151 which, over a period of time, tended to wipe out U80, the 155-0076 input protection IC. After SN B155789 a PNP transistor wa

Considerable interest has been shown on this forum concerning repair of Tektronix 485 oscilloscopes. They are wonderful instruments but they do present new challenges to a troubleshooter. There are 14

Hi Steve: As you now well know, Tektronix knobs are fragile and break easily. The 485 V/DIV knobs are identical to those used in other 4XX series scopes except for the very deep cavity in the front of

Hi Kevin: There are two types of Tantalum caps used by Tektronix in their 485's and other scopes. The first is the hermetically sealed model and the second is the axial dipped model. In refurbishing o

Hi Michael: Remove the scope from the case and spray contact cleaner on the slider of the BEAM FINDER pushbutton switch and then immediately exercise it about 20 times. Your note said you have dirty/s

I have had this problem with a few 485's I have refurbished and every time it was the X6 voltage multiplier U1600 located on the A15 Transformer Board. It is supplied by Voltage Multiplier Inc., 8711

Hi Jr: Same procedure as the 485. Tap on every variable component including pots, varcaps, switches and connectors. The 465B uses a voltage doubler so you can check it the same way. Just make sure you