Sinclair Spectrum: Difference between revisions

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|860010372006
|860010372006
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860010372006/5728555 DigiKey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860010372006?qs=0KOYDY2FL29Ggp2VaG847w%3D%3D Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860010372006/5728555 DigiKey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860010372006?qs=0KOYDY2FL29Ggp2VaG847w%3D%3D Mouser]
|}
{| class="wikitable sortable"
|+Replacement Axial Capacitors
!RefDes
!Qty
!Compatible Part Number
!Order Links
|-
|C25, C28, C44, C47, C50, C65
|6
|MAL213835229E3
|[https://www.digikey.com/en/products/detail/vishay-beyschlag-draloric-bc-components/MAL213835229E3/263102 Digikey] [https://www.mouser.com/ProductDetail/Vishay-BC-Components/MAL213835229E3?qs=cAZGeXF9iMpwMn3iAIn%2Fkg%3D%3D Mouser]
|-
|C27, C46
|2
|105TTA050M
|[https://www.digikey.com/en/products/detail/cornell-dubilier-illinois-capacitor/105TTA050M/5410603 DigiKey] [https://www.mouser.com/ProductDetail/CDE-Illinois-Capacitor/105TTA050M?qs=UG%2F8xqv%2F6WfG1nPz8JgKXw%3D%3D Mouser]
|-
|C44, C45
|2
|107BPA016M
|[https://www.digikey.com/en/products/detail/cornell-dubilier-illinois-capacitor/107BPA016M/5410731 DigiKey] [https://www.mouser.com/ProductDetail/CDE-Illinois-Capacitor/107BPA016M?qs=3tP%252BN51vMXcmVaYjLpsFVA%3D%3D Mouser]
|}
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
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|6
|6
|22 µF
|22 µF
|25
|25 V
|Axial
|Axial
|4.8mm
|4.8mm
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|860020672008
|860020672008
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020672008/5728799 DigiKey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020672008?qs=0KOYDY2FL29ss4NKHUPOsQ%3D%3D Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020672008/5728799 DigiKey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020672008?qs=0KOYDY2FL29ss4NKHUPOsQ%3D%3D Mouser]
|}
{| class="wikitable sortable"
|+Replacement Axial Capacitors
!RefDes
!Qty
!Compatible Part Number
!Order Links
|-
|C25, C28, C34, C47, C50, C65
|6
|MAL203036229E3
|[https://www.digikey.com/en/products/detail/vishay-beyschlag-draloric-bc-components/MAL203036229E3/5632198 Digikey] [https://www.mouser.com/ProductDetail/Vishay-BC-Components/MAL203036229E3?qs=4T%252B5yYZyZYfHFbw03iMpnw%3D%3D Mouser]
|-
|C27, C46
|2
|105TTA050M
|[https://www.digikey.com/en/products/detail/cornell-dubilier-illinois-capacitor/105TTA050M/5410603 DigiKey] [https://www.mouser.com/ProductDetail/CDE-Illinois-Capacitor/105TTA050M?qs=UG%2F8xqv%2F6WfG1nPz8JgKXw%3D%3D Mouser]
|-
|C44, C45
|2
|107BPA016M
|[https://www.digikey.com/en/products/detail/cornell-dubilier-illinois-capacitor/107BPA016M/5410731 DigiKey] [https://www.mouser.com/ProductDetail/CDE-Illinois-Capacitor/107BPA016M?qs=3tP%252BN51vMXcmVaYjLpsFVA%3D%3D Mouser]
|-
|C74
|1
|475TTA050M
|[https://www.digikey.com/en/products/detail/cornell-dubilier-illinois-capacitor/475TTA050M/5412738 DigiKey] [https://www.mouser.com/ProductDetail/Cornell-Dubilier-CDE/475TTA050M?qs=3tP%252BN51vMXdn7LI1ODkIcw%3D%3D Mouser]
|}
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''

Revision as of 15:33, 15 June 2022

The famous ZX Spectrum from Sinclair Research introduced in 1982


For more information, see this article's corresponding Wikipedia page: ZX Spectrum.
Sinclair Spectrum
Preliminary Information
Release Year 1982
Leak Risk Medium
Batteries None
Mounting Technology Through Hole, Sockets
Capacitor Types Aluminum Electrolytic, Ceramic, Polymer
Destructive Entry No

Known Issues

Symptom or Problem Encountered

Causes

  • Description of cause

Solutions

  • Solution to the problem

Disassembly Notes

A Spectrum 48K is easy to disassemble:

Remove the five screws from the back. Carefully open the case then lift the front edge you will see the keyboard connections to the motherboard, ease these connections out because they are easily damaged. Note that if the Keyboard is the original it is likely to be non-functional.

Original Parts

Spectrum motherboard Issue 2.

Picture of Sinclair Spectrum issue 2 motherboard showing capacitor positions and values
Sinclair Spectrum issue 2 motherboard capacitors

Note the reversed polarity on the silk screen for capacitor C46.

Capacitor Specifications and Footprint Information
Qty Capacitance Voltage Mount Diameter/Size Height Temp Type Brand Series
C25,C28,C44,C47,C50,C65 6 22 µF 16 V Axial 4.8 mm Dia. 12 mm 85 °C Aluminum Electrolytic Gelec
C27,C46 2 1 µF 50 V Axial 4.8 mm Dia. 12 mm 85 °C Aluminum Electrolytic Gelec
C44,C45 2 100 µF 16 V Axial 6.5 mm Dia. 16 mm 85 °C Aluminum Electrolytic Gelec

Replacement Parts

Spectrum motherboard Issue 2

Replacement Radial Capacitors
RefDes Qty Compatible Part Number Order Links
C25, C28, C44, C47, C50, C65 6 860020372002 Digikey Mouser
C27, C46 2 860020672005 DigiKey Mouser
C44, C45 2 860010372006 DigiKey Mouser
Replacement Axial Capacitors
RefDes Qty Compatible Part Number Order Links
C25, C28, C44, C47, C50, C65 6 MAL213835229E3 Digikey Mouser
C27, C46 2 105TTA050M DigiKey Mouser
C44, C45 2 107BPA016M DigiKey Mouser

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Original Parts

Spectrum motherboard Issue 3

Picture of Sinclair Spectrum issue 2 motherboard showing capacitor positions and values
Sinclair Spectrum issue 3 motherboard capacitors
Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Diameter/Size Height Temp Type Brand Series
C25,C28,C34,C47,C50,C65 6 22 µF 25 V Axial 4.8mm 12 mm 85 °C Aluminum Electrolytic Philips
C27,C46 2 1 µF 50 V Axial 4.8 mm Dia. 12 mm 85 °C Aluminum Electrolytic Gelec
C44,C45 2 100 µF 16 V Axial 6.5 mm Dia. 16 mm 85 °C Aluminum Electrolytic Gelec
C74 1 4.7 µF 50 V Axial 4.8 mm Dia. 12 mm 85 °C Aluminum Electrolytic Philips

Replacement Parts

Spectrum motherboard Issue 3

Replacement Radial Capacitors
RefDes Qty Compatible Part Number Order Links
C25, C28, C34, C47, C50, C65 6 860010472003 Digikey Mouser
C27, C46 2 860020672005 DigiKey Mouser
C44, C45 2 860010372006 DigiKey Mouser
C74 1 860020672008 DigiKey Mouser
Replacement Axial Capacitors
RefDes Qty Compatible Part Number Order Links
C25, C28, C34, C47, C50, C65 6 MAL203036229E3 Digikey Mouser
C27, C46 2 105TTA050M DigiKey Mouser
C44, C45 2 107BPA016M DigiKey Mouser
C74 1 475TTA050M DigiKey Mouser

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

References

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