My Stanmore is powerless again. Have found some major issues in it. Will share the info later.
Came across with this post on another forum. (mikrocontroller.net/topic/547728)
Translated it from Germany to English.
And here is the sketch:
Came across with this post on another forum. (mikrocontroller.net/topic/547728)
Translated it from Germany to English.
From Josef Aichhorn (Guest), first contact with my inquiry: 16.12.2022 01:00
Hello everyone!
I want to thank everyone who helped me repair my MARSHALL STANMORE! Yes, it's working again - something I hardly believed after initial research.
The link to Badcaps by "4:46 (Guest)" was very efficient! THANK YOU! Among tons of photos and posts, I found the values and designations of the burned components!
In short, facts (values and designations of the components, see schematic sketch):
2 defective electrolytic capacitors (EKLOs): C59 [electrolyte leakage], C80 [bulging cap], [both 470µ/50V], and as a precaution, 4 more of the same type replaced.
Defective parts: Si 1.6AT, Q7, C124, U1, R18+R104, R19,
Defect due to the removal of the black, hard, tough paste: R69 (not in the power supply: R41[3R30]).
A heartfelt THANK YOU to everyone!
Josef from Austria
PS: As a small thank you, I want to share my painstakingly created sketch of the switching power supply (from Marshall Stanmore) here - because I can imagine that it might be useful ;-) !
Maybe someone can send it to the Badcaps forums - I don't have authorized access yet... just for viewing. °[:->)
Hello everyone!
I want to thank everyone who helped me repair my MARSHALL STANMORE! Yes, it's working again - something I hardly believed after initial research.
The link to Badcaps by "4:46 (Guest)" was very efficient! THANK YOU! Among tons of photos and posts, I found the values and designations of the burned components!
In short, facts (values and designations of the components, see schematic sketch):
2 defective electrolytic capacitors (EKLOs): C59 [electrolyte leakage], C80 [bulging cap], [both 470µ/50V], and as a precaution, 4 more of the same type replaced.
Defective parts: Si 1.6AT, Q7, C124, U1, R18+R104, R19,
Defect due to the removal of the black, hard, tough paste: R69 (not in the power supply: R41[3R30]).
A heartfelt THANK YOU to everyone!
Josef from Austria
PS: As a small thank you, I want to share my painstakingly created sketch of the switching power supply (from Marshall Stanmore) here - because I can imagine that it might be useful ;-) !
Maybe someone can send it to the Badcaps forums - I don't have authorized access yet... just for viewing. °[:->)
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