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Re: 575 - advice sought from owners


 

Holy Formatting Failure Batman...... :-(

I uploaded the original spreadsheet here:

/g/TekScopes/files/Tektronix%20575%20Parts


On Sun, Jun 10, 2018 at 6:43 PM, David Holland
<david.w.holland@...> wrote:
For the PTM caps, in general, I used Mallory 630V polyester film caps
from from Mouser.. I restuffed the electrolytic cans.

I *think* this is the parts list I used when I restored the
non-Mod122... If anyone uses it, please double check the parts, I
sometimes make last minute substitutions, that may not have made it
back into the spreadsheet.

(Yes, I shot-gunned all EMC, and PTM capacitors and one cap I thought
might of been a Micamold (paper) cap.)

Identifier Capacitance Type Voltage Tolerance Part #
C102 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C105 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C108 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C122 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%

C128 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C130 .047uf PTM 400v 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C145 .0015uf Mica (mold) 500v 10.00% 5982-19-500V1500P
1.86 Cornell Dubilier Mica Capacitors MICA 1500pF
500V 5%

C186 .022uf PTM 400v 539-150223J630DB
0.54 Mallory Polyester Film Capacitors 630V .022uF 5%
C232 .001uf PTM 600v 539-150102K630BB
0.41 Mallory Polyester Film Capacitors 630V .001uF 10%
C240 2000uf EMC 20v 661-EKMGG250ELL222MK
1.32 United Chemi-Con Aluminum Electrolytic Capacitors -
Leaded 25volts 2200uF 12.5X25
C241 2000uf EMC 20v 661-EKMGG250ELL222MK
1.32 United Chemi-Con Aluminum Electrolytic Capacitors -
Leaded 25volts 2200uF 12.5X25

C242 2000uf EMC 20v 661-EKMGG250ELL222MK
1.32 United Chemi-Con Aluminum Electrolytic Capacitors -
Leaded 25volts 2200uF 12.5X25
C243 2000uf EMC 20v 661-EKMGG250ELL222MK
1.32 United Chemi-Con Aluminum Electrolytic Capacitors -
Leaded 25volts 2200uF 12.5X25
C244 150uf EMC 150v 661-EKXG251ELL151MM2
2.01 United Chemi-Con Aluminum Electrolytic Capacitors -
Leaded 250volts 150uF 18X25
C267 .001uf 600v 539-150102K630BB
0.41 Mallory

C602 2 x 20uf EMC 450v 647-UVY2W220MHD (20uF)
1.14 Nichicon Aluminum Electrolytic Capacitors - Leaded
450volts 22uF 12.5x25 20% 5LS
C611A,B 2 x 20uf EMC 450v 647-UPZ2W390MHD (39uF)
1.48 Nichicon Aluminum Electrolytic Capacitors - Leaded
450volts 39uF 12.5X35.5 20%
C613 .01uf PTM 400v 539-150103K630BB
0.48 Mallory Polyester Film Capacitors 630V .01uF 10%
C620 125uf EMC 350v 647-UPT2G121MHD 2.05
Nichicon Aluminum Electrolytic Capacitors - Leaded 400volts
120uF 16X40 20%

C630 .01uf PTM 400v 539-150103K630BB
0.48 Mallory Polyester Film Capacitors 630V .01uF 10%
C641 2 x 20uf EMC 450v 647-UVY2W220MHD
1.14 Nichicon Aluminum Electrolytic Capacitors - Leaded
450volts 22uF 12.5x25 20% 5LS
C644 .01uf PTM 400v 539-150103K630BB
0.48 Mallory Polyester Film Capacitors 630V .01uF 10%
C655 .01uf PTM 400v 539-150103K630BB
0.48 Mallory Polyester Film Capacitors 630V .01uF 10%
C666 2 x 20uf EMC 450v 647-UVY2W220MHD
1.14 Nichicon Aluminum Electrolytic Capacitors - Leaded
450volts 22uF 12.5x25 20% 5LS

C802 .001uf PTM 600v 539-150102K630BB
0.41 Mallory Polyester Film Capacitors 630V .001uF 10%
C808 .01uf PTM 600v 539-150103K630BB
0.48 Mallory Polyester Film Capacitors 630V .01uF 10%
C809 .001uf PTM 600v 539-150102K630BB
0.41 Mallory Polyester Film Capacitors 630V .001uF 10%

C811 .047uf PTM 600v 10.00% 539-150473J630EC
0.66 Mallory Polyester Film Capacitors 630V .047uF 5%
C816 .022uf PTM 600v 539-150223J630DB
0.54 Mallory Polyester Film Capacitors 630V .022uF 5%


David


On Sun, Jun 10, 2018 at 6:25 PM, tom jobe <tomjobe@...> wrote:
Hi David,
What type of capacitors do you suggest replacing the 575 paper caps with,
and where do you buy them?
Thank you to all that have contributed to this 575 topic!
tom jobe...

On 6/10/2018 3:17 PM, David Holland wrote:

There are a number of paper capacitors in the HV section. (Amongst other
locations). I'm sure folks will disagree, but I'd recommend preemptively
replacing them. (Any capacitor described as PTM in the parts list is
paper.)

Be careful with C809, if you decide to replace it, its soldered directly
across T801. The wires for the transformer, which will likely come out
with the capacitor, are (very) fine.

David

Obligatory: If anyone wants a non-Mod122C, and is in the Dayton Ohio
area,
and is willing to pick it up, holler. It has been restored, and was
running last I tried it. (No, I will not ship, sorry)

On Sun, Jun 10, 2018 at 5:23 PM, John <John@...> wrote:

Thanks for the advice guys: I do normally run stuff up on a variac, and I
will check those fuses are in place. Fortunately I have a supply of
many
of the valves used (and a valve-tester): fingers crossed it's not had all
the valves stripped!

John






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