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| Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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10th Dec 2017, 1:10 pm
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#1 |
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Retired Dormant Member
Join Date: Feb 2015
Location: Norfolk, UK.
Posts: 11
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Siemens H42. Component ID?
I am trying to restore Siemens H42 radio its slow going as I know little and a modern schematic would help.
Came across this in two parts with 1250 written on it i think its a ceramic capacitor can someone confirm please thanks john |
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10th Dec 2017, 1:20 pm
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#2 |
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Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Part ident
It looks like a thermistor.
I understand that you can download the schematic from here as a guest, but haven't done so myself: https://www.radiomuseum.org/r/siemen...e_h42_h_4.html Last edited by AC/HL; 10th Dec 2017 at 1:25 pm. Reason: Been to specsavers! |
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10th Dec 2017, 1:28 pm
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#3 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Part ident
I think its marked T250.
The schematic doesn't suggest a thermistor so far as I can make out. Could it be one of the mains filter capacitors?...What is it connected to? Lawrence. |
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10th Dec 2017, 1:43 pm
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#4 |
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Rest in Peace
Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
Posts: 3,944
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Re: Part ident
A vdr?
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10th Dec 2017, 2:49 pm
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#5 | |
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Retired Dormant Member
Join Date: Feb 2015
Location: Norfolk, UK.
Posts: 11
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Re: Part ident
Quote:
I'ts connected to or I should say soldered across red and black wires to speakers on tag board. Thanks for help guys |
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10th Dec 2017, 3:00 pm
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#6 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Part ident
On closer inspection I think you are right, the only thing I can see on the schematic to do with the loudspeaker circuit that might fit that number is a 1.25nF (1,250pF) capacitor.
Lawrence. Last edited by ms660; 10th Dec 2017 at 3:09 pm. |
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10th Dec 2017, 3:18 pm
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#7 |
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Retired Dormant Member
Join Date: Feb 2015
Location: Norfolk, UK.
Posts: 11
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Re: Part ident
Had a look around and found another one in good order fixed to EF80 pins 7 and 9
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11th Dec 2017, 1:19 pm
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#8 | |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Part ident
Quote:
Looks like Elektrotanya have it, too. The one on the EF80 is connected to pins 1&3 at one end, not 7&9.
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O Last edited by Herald1360; 11th Dec 2017 at 1:38 pm. |
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11th Dec 2017, 2:07 pm
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#9 |
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Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
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Re: Siemens H42. Component ID?
Definitely a 1250pf capacitor then. Marked as 1.250n
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13th Dec 2017, 10:33 am
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#10 |
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Retired Dormant Member
Join Date: Feb 2015
Location: Norfolk, UK.
Posts: 11
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Re: Siemens H42. Component ID?
Yes cheers
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