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Hi Everyone, My 494 is stuck in the higher bands (will not switch to 0 to 1.8ghz band) The feed to the S11 and S12 band select relays is stuck on 31v .No change in polarity when you operate the band

Search this forum, and Tekscopes and EEVblog for rebuilds. Try Qservice in Greece for the part. Believe its X3 not X6. Jon

I decided to just deal with the disassembly to confirm if the HV Multiplier was the issue or not. After de-soldering it, the -2450 test point arced to the probe as soon as I got it close to it so

Dear all, Is it possible to use it as a replacement for the 2.2' disk used with the tektool app? I have tried two drives and several disks attempting to save the calibration constants of my TDS784D

Hi. Assuming you have the user/service manual.? (A very good learning aid!)? Follow the "theory of operation" section relating to the CRT section, and also follow the performance check routines,

usual 475 fail is HV transformer , HV mult caps, high Ohm divider res. See many threads on Tekscopes as well as Tekscopes 2 and EEV blog for 465/475 HV transformer rebuild. Not trivial. Bon chance,

Hi all, I recently acquired a Tektronix 475 oscilloscope. I've been looking to get an analog scope for a while and was really excited to finally pick one up. It was sold as working, but seller wasn't

Dear All, is there someone so kind to help me by sending the content of the disk "271X Flatness Tests" for a tek 2715 CATV SA? Thank you very much in advance Pietro

Hello all: Am Seeking a Tektronix scope 7904A service manual, Original printed version The usual online, PDF , Artech repro etc are not suitable. For museum use, by non profit. Location in USA, (or

Hi all, I've just uploaded a bunch of software applications for the TDS500/600/700 series scopes.

For the record, rewinding without repotting does not guarantee failure, or at least not immediate failure. I rewound my 453 in 2015. Layer winding with retrace, tape between layers, painting the end

Sorry, a 576 is what i'm looking for. I managed to find a silicone-potted one on ebay. Thanks for the help anyway!

Are you looking for a 575 HV transformer as the title states, or a 576 transformer as your message states? If it’s for a 575, I may have one if they’re the same as a 532, which uses the same CRT.

Alex fine to hear from East Europe. Bravo for your initiative. HV trsf: NO replacements avail (that was years ago) The dead HV need to be disassembled, rewind, repot. Takes days, needs special

Hey Guys! Just a short introduction 'bout me. I'm a Romanian who caught the Tek bug. I managed to score a 556 (which i've gotten almost fully working) a 576(fully working) and a 7104. Fixed a bunch

Hello Chuck and all.... Yes, the odd/even suffixes for CH 1/2 are indeed identical except for the 3 conductor cable that connects the BNC probe ID ring and 50 Ohm overload thermistor sensor to the

To make the wires that control the attenuator's relays lay nicer, they made a left and right hand attenuator. The only difference, as I recall, is which hole they ran the wires through. -Chuck Harris

IIRC it’s just a matter of which side the cable that drives the relays is fed out of the attenuator module – you can rearrange that to suite either channel. Sent: 06 November 2024 06:48 To:

I can't help you on this, but I have to wonder. Are you saying that the front-end attenuators for channels one and two are different from each other? I'd think they should be identical. If not, why

Hello all: These models are very similar exept for the bandwidth, 150/350..400 MHz \. Are the input attenuators the same? 119-2342-09, 119-2342-10, 119-2342-01, 119-2342-05 119-1445-04 119-1445-05 The