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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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21st Dec 2020, 10:52 pm | #41 |
Tetrode
Join Date: May 2014
Location: Eichstätt, Germany
Posts: 88
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
That's only a square wave your scopes are showing but that looks good. The edges are quite sharp. Everything ok so far. Obviously no bigger problems.
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23rd Dec 2020, 7:56 am | #42 | ||
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
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Right now this forum made me interested in a quest on finding the easiest method to locate where this unit is drawing that amount of power... So as I do not want to torture it, oscilloscope is put to sleep until I find resources with which I can locate shorts... |
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23rd Dec 2020, 8:24 am | #43 |
Tetrode
Join Date: May 2014
Location: Eichstätt, Germany
Posts: 88
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Perhaps there is no problem...
A power consumption of 2xxW is ok. Traces look good. Chirping can be caused by a not perfect transformer or something loose in the magnetic field.
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23rd Dec 2020, 2:00 pm | #44 | |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Quote:
I really did not find any module which draw significantly more current then the rest of modules... Only thing that struggles me is about voltage of -5 rail... Conclusion would be possible by someone measuring Gould 409X overall power consumption as the unit now with spot on -5v rail draws 20watts more power then classified max for 4070 psu... |
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23rd Dec 2020, 2:08 pm | #45 |
Tetrode
Join Date: May 2014
Location: Eichstätt, Germany
Posts: 88
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Measuring the power consumption of a 40xx isn't an easy task:
I have seen peak currents of 43A since there is a huge capacitor behind the rectifier.
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23rd Dec 2020, 2:23 pm | #46 |
Tetrode
Join Date: May 2014
Location: Eichstätt, Germany
Posts: 88
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
As it happens I have a D1052...
After performing it's selftest it consumes 249W (428VA!). Perhaps the 409x need some more power than the 407x...
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23rd Dec 2020, 7:26 pm | #47 | |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Quote:
Wow, today I was at work blitz, as the town hall put an end to work from home... I did reed your post in a hurry about your unit, but it did not hit me today they are the same... I guess your -5v rail is adjusted the same as mine was before (at around -4.7v). Anyway thank you very much about measurements made, because that would indicate this question as true and which might conclude this topic as resolved |
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26th Dec 2020, 10:21 am | #48 |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Here is the output coming from yamaha v375 receiver, could not find option to magnify y axis on siemens d1052, so output is 5times lower...seems very correct...
That is with somewhat low volume on 8 ohm resistor. Last edited by Roberts981; 26th Dec 2020 at 10:30 am. |
26th Dec 2020, 10:48 am | #49 |
Tetrode
Join Date: May 2014
Location: Eichstätt, Germany
Posts: 88
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
You are right, there is no y-magnify but the D1052 can go down to 2mV/div. That should be good enough.
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22nd Jul 2021, 1:52 pm | #50 |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Siemens D1052 oscilloscope (Gould DSO).
https://www.google.com/url?client=in...P3E5ad2HGQ_Hc2
Above topic is closed so I have to open a new one. It served me a short time. Few turn ons and puff magic smoke came again. This time we could identify blown parts. 1. 3.15A FUSE on PSU casing had blown and than we replaced it. After that next happened: 2. 100 ohm RESISTOR R34 blew up. 3.Q11 (BU810) has short between Emitter to Collector. Should I look for any further parts causing this behavior before turning it on again? CHEERS. |
22nd Jul 2021, 3:09 pm | #51 |
Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,865
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
The original thread opened and new post merged you can always request closed threads to be re-opened using the red triangle.
Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk |
14th Aug 2021, 5:42 pm | #52 |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
I need this supply fixed as soon as possible. Any thoughts on burning r34?
Here goes pdf on supply rail: https://www.vintage-radio.net/forum/...3&d=1399804554 Last edited by Roberts981; 14th Aug 2021 at 5:48 pm. |
14th Aug 2021, 6:06 pm | #53 |
Nonode
Join Date: Aug 2010
Location: Resolven, Wales; and Bristol, England
Posts: 2,608
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
This power supply is quite a beast. If you search and find my old thread about repairing the supply you will find lots of clues.
One thing to remember is that the switch mode side is in two parts, both of which need to work properly before you'll get anyhting sensible out of it. I have two working ones, both of which have completely new capacitors and probably several other parts, it's been a long time. My Gould DSO is a long project.....
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14th Aug 2021, 6:48 pm | #54 |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Thanks and I really mean it...
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20th Aug 2021, 5:12 pm | #55 | |
Triode
Join Date: Dec 2020
Location: Nis, Serbia.
Posts: 28
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Re: Siemens D1052 oscilloscope (Gould DSO 4096).
Quote:
We still got burned something inside. We had no more energy that day to look inside again. Are we missing something. |
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