I just finished restring and leaning this Tektroninx 502A, Im

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Anonymous
2016-04-28 17:11:32 Post No. 985822
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Anonymous 2016-04-28 17:11:32 Post No. 985822 [Report]

I just finished restring and leaning this Tektroninx 502A, Im still waiting for 3 tubes that it has missing before I can turn it on for the first time after cleaning it,before it just made a dot, so the HV was there and it gaved some life but had missing 3 tubes and a transistor, now I dont think I will found a identical transistor so I will have to substitute it probably ,but its in the power supply so I ques it shouldn't be that complex

the missing transistor is a 2n214, with wat could I substitute it ??

Im planing on using this scope on vintage tube amp buiilds and stuff ...

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Anonymous 2016-04-28 17:12:34 Post No.985823
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Anonymous 2016-04-28 17:12:34 Post No.985823 [Report]

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another pic

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Anonymous 2016-04-28 18:59:32 Post No.985887
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Anonymous 2016-04-28 18:59:32 Post No.985887 [Report]

>>985822
Full time amp tech here.
NTE103A transistor will do the job.
https://www.tubesandmore.com for uncommon nos tubes
If you're building amps, you wont really have much occasion to use it. I only have to fire up my scope to track down parasitic oscillations. Do the filter caps while you're in there replacing the transistor. Cool piece of equipment you have there.

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Anonymous 2016-04-28 19:44:22 Post No.985923
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Anonymous 2016-04-28 19:44:22 Post No.985923 [Report]

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I am repairing the crt tube, I mean the socket is lose so I removed it and there were 3 broken pins on it, any idea how to re-attach them back ?

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Anonymous 2016-04-29 01:10:20 Post No.986073
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Anonymous 2016-04-29 01:10:20 Post No.986073 [Report]

>>985822
>Tektroninx 502A
Fuckin beautiful anon.

Good speed.

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Anonymous 2016-04-29 01:51:17 Post No.986095
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Anonymous 2016-04-29 01:51:17 Post No.986095 [Report]

>>985923
Solder maybe?

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Anonymous 2016-04-29 13:15:14 Post No.986269
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Anonymous 2016-04-29 13:15:14 Post No.986269 [Report]

Can I use superglue to glue the crt bese back on ?

how heat resistent is superglue, should I care ,how hot does a crt in one of these get ?

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Anonymous 2016-04-30 01:37:42 Post No.986565
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Anonymous 2016-04-30 01:37:42 Post No.986565 [Report]

>>986269
use a thin bead of non acid RTV silicone that can handle temps up to about 350° f