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Tektronix 576 missing max peak volts knob


 

Hi,

I¡¯m considering a 576 curve tracer that has a missing max peak volts knob
and no shaft coming out of the hole. So presumably there are also some
missing parts inside. How feasible is this to replace?

I took a quick look at sphere and qservice but didn¡¯t see the relevant
parts. I¡¯m not opposed to making an equivalent if that¡¯s practical.

Thanks
Matt


 

Matt

If there is no shaft coming out of the hole this could be a small missing part or a very LARGE missing part. This is a 2 layer shaft that is coupled directly to the isolated collector supply. So now the questions are how much? For $20.00 it might be a steal. For what these tend to go for I personally would pass. Because the known issues of does it have the good HV transformer as well as a healthy tube are also a question.

However if the tube is healthy there is some value there because as a parts unit the tube in the 576 is unique. The 577 is the one that shares with a scope. I can provide a lot more information off list if you ware interested.

Zen

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Matt Huszagh
Sent: Wednesday, April 13, 2022 7:37 PM
To: [email protected]
Subject: [TekScopes] Tektronix 576 missing max peak volts knob

Hi,

I¡¯m considering a 576 curve tracer that has a missing max peak volts knob and no shaft coming out of the hole. So presumably there are also some missing parts inside. How feasible is this to replace?

I took a quick look at sphere and qservice but didn¡¯t see the relevant parts. I¡¯m not opposed to making an equivalent if that¡¯s practical.

Thanks
Matt


 

If those parts are removed then there's NO TELLING what other parts are
missing or bad. Parts for these are generally only available used and on
FleaBay and the asking prices are usually insane. Therefore I wouldn't
touch it unless it's CHEAP. Shipping alone usually costs more than what an
incomplete, unknown condition, parts unit is worth to me.

After a couple of years of looking at a bunch of broken 576s on FleaBay
and looking at the price that they wanted for parts, I gave up and paid
$$$$ for a fully working unit. I paid a LOT for mine but the six adapters
that came with it cost more on FleaBay than I paid for the complete CT and
shipping.

A broken CT can nickel and dime you to death!

On Wed, Apr 13, 2022 at 8:54 PM Matt Huszagh <huszaghmatt@...> wrote:

Hi,

I¡¯m considering a 576 curve tracer that has a missing max peak volts knob
and no shaft coming out of the hole. So presumably there are also some
missing parts inside. How feasible is this to replace?

I took a quick look at sphere and qservice but didn¡¯t see the relevant
parts. I¡¯m not opposed to making an equivalent if that¡¯s practical.

Thanks
Matt