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Hi Sean, I stand corrected. Tek did make a simple viewing hood . The 016-0260-00 was a simple 3 sided folding viewing hood for the 577, 5000 series, and the 7000 series. I'm looking at a picture of

Great timing Walter. I replied to Hans off list and even mentioned you had commented regarding the switches. I was wondering also if Gigatronics had inherited Wavetek since I read somewhere else

I use a piece of cardboard, rolled up to fit. 73, Dick, W1KSZ wrote:

Hi Colin, They aren't rare. They used to show up on Ebay all the time. They are listed in the Tek catalogs in the Accessory section. Dennis Tillman W7PF

Hi Sean, I did send Gary Bosworth the two viewing hoods I had that are mentioned in the email link you are referring to. I do not recall ever seeing a simple shade for the 7000 series scopes. I made

That is probably the 016-0053-00 round hood for 5" round CRT scopes. There is a three sided folding one 016-0260-00, and a full light shield that you put your face against 016-0154-00 But you can look

No variac, I'm using normal line voltage (230 V). Max

Not that specific component failures on mine will address your issue, but about 17 years ago I replaced these shorted components. (Not all in the same incident) CR1534 killed beam C581 - 22uF killed

Yeah, that's the one shown in the old thread. I was thinking more along the lines of the hood shown on Mr. Carlson's 565 in this video: https://www.youtube.com/watch?v=v3Jv2_pQ86o Does something

1038-N10 Switches The switches on the N10 are a huge problem because the footprint and shaft do not match anything else. I was able to buy one box of replacement switches from Gigatronics (they

Thanks for the several cautions and suggestions. I did look for shorted caps as I had several tantalums go previously - but I replaced them all a couple of years ago and it had been running fine.

Hi Max, I checked that P83 can be left disconnected, like in many previous versions of power supplies. At the LV board there are resistors R76, R96 and R132 for this between the sense lines and the

Had similar problems years ago and the problem was those little tants going short. Rather hazy on the details now, but I remember how infuriating those power supply interlocking systems were. With

Listed in the 1970 catalogue (and probably others). USD 7.00 Apparently not only fits the 7000 series but also the 601, 602 and 528 Craig

Hi Lorenzo, don't disable the protection, it could damage your supply. Maybe you should disconnect the -5V regulator from its load and use a lab power-supply to provide the -5V to the loaad. Set the

If you really have a short circuit from -5V to ground (eg a failed tantalum capacitor) you don't need to power up the scope, it should be obvious with a resistance measurement. Schematic <17> shows

I have one of these. I got it off eBay and it seems no-one else was interested, as I got it for the starting price of 99 pence (UK). They seem to be very rare items and bears a part-number

Hi Albert, You're probably right, I didn't analyze the feedback/offset circuit in fine detail. My conclusion about the offset was mostly based on what I observed while probing around the head. My 7S12

I have posted in eevblog also thanks a lot for the inputs

Hi Ed, Did you try switching off digital storage? If there is a fault in it (and it's quite a complex circuit), it would interrupt the signal path. My unit was such a case (was working only with DS