Sinclair Spectrum

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

This device is in the WorkNeeded:General category because it was flagged as missing general information about the device. The information may be incomplete, using default text, or inaccurate and should be verified with external sources if possible. If you can add or correct information on this page, please feel free to edit it and do so.

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 connection 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.

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	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/

Related Links

• Videos or other things that might be helpful to check out