Sinclair Spectrum: Difference between revisions

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

VisualWikitext

Revision as of 18:50, 20 February 2022

For more information, see this article's corresponding Wikipedia page: ZX Spectrum.

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.

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
C25,C28,C44,C47,C50,C65	6	220 µF	16	Axial	4.8 mm Dia.	12 mm	85 °C	Aluminum Electrolytic	Gelec
C27,C46	2	1 µF	50	Axial	4.8 mm Dia.	12 mm	85 °C	Aluminum Electrolytic	Gelec
C44,C45	2	100 µF	16	Axial	6.5 mm Dia.	16 mm	85 °C	Aluminum Electrolytic	Gelec

Replacement Parts

Basic PCB Name

Capacitors
RefDes	Qty	Compatible Part Number	Order Links
			Digikey

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.

Kits

Digikey BOM: https://www.digikey.com/

References

@@ Line 22: / Line 22: @@
 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 connection out because they are easily damaged. Note that if the Keyboard is the original it is likely to be non-functional.
+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==