Tandy CM-11

Preliminary Information
Leak Risk	Low
Batteries	None
Destructive Entry	No
CRT Guides
General Information · Repair Cautions

The Tandy/Radio Shack CM-11 is an Enhanced CGA monitor that supports the Tandy 225 Line modes in addition to the standard CGA resolutions. There are 3 variations of the monitor that can be identified by its Catalog Number: 25-1024, 25-1024A, and 25-1024C. Each variant has a slightly different list of capacitors.

Original Parts (25-1024C Version)

Main Board

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter	Height	Lead Spacing	Temp	Type	Brand	Series
C401	1	22 µF	16v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Marcon
C403	1	10 µF	50v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Marcon
C404	1	47 µF	16v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Panasonic	SU
C405, C608	2	100 µF	25v	Through Hole	7mm	10mm	5mm	85 °C	Electrolytic	Marcon
C406	1	100 µF	50v	Through Hole	7mm	10mm	5mm	85 °C	Electrolytic	Nippon Chemicon	SME
C409, C708	2	220 µF	25v	Through Hole	7mm	10mm	5mm	85 °C	Electrolytic	Marcon
C481	1	220 µF	16v	Through Hole	8mm	15mm	5mm	85 °C	Electrolytic	Marcon
C501, C607	2	10 µF	16v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Marcon
C504, C603	2	1 µF	50v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Panasonic	SU
C505	1	100 µF	16v	Through Hole	7mm	10mm	5mm	85 °C	Electrolytic	Panasonic	SU
C507	1	33 µF	16v	Through Hole	10mm	15mm	5mm	85 °C	Electrolytic	Nichicon	SH
C510	1	1000 µF	35v	Through Hole	12mm	25mm	5mm	85 °C	Electrolytic	Nippon Chemicon	SME
C512	1	100 µF	35v	Through Hole	7mm	10mm	5mm	85 °C	Electrolytic	Marcon
C515	1	470 µF	25v	Through Hole	10mm	15mm	5mm	85 °C	Electrolytic	Marcon
C611	1	4.7 µF	50v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Marcon
C617	1	47 µF	160v	Through Hole	15mm	25mm	7.5mm	85 °C	Electrolytic	Nichicon
C705	1	470 µF	200v	Through Hole	20mm	50mm	5mm	85 °C	Electrolytic	Nichicon
C707	1	47 µF	50v	Through Hole	5mm	10mm	5mm	85 °C	Electrolytic	Marcon
C710	1	330 µF	160v	Through Hole	22mm	40mm	10mm	85 °C	Electrolytic	Nichicon
C711	1	100 µF	160v	Through Hole	15mm	35mm	7.5mm	85 °C	Electrolytic
C715	1	470 µF	50v	Through Hole	12mm	20mm	5mm	85 °C	Electrolytic	Nichicon	VX

Neck Board

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter	Height	Lead Spacing	Temp	Type	Brand	Series
C858	1	22 µF	160v	Through Hole	13mm	20mm	5mm	85 °C	Electrolytic	Marcon
C860	1	100 µF	16v	Through Hole	7mm	10mm	5mm	105 °C	Electrolytic	Nichicon	PF
C861	1	100 µF	35v	Through Hole	7mm	10mm	5mm	105 °C	Electrolytic	Nichicon	PF

Replacement Parts (25-1024C Version)

Capacitors

RefDes	Qty	Compatible Part Number	Order Links
C401	1	UVZ1C220MDD1TD	Mouser
C403, C501, C607	3	EEU-FR1H100B	Mouser
C404, C707	2	UPV1H470MGD	Mouser
C405, C608	2	EEU-FR1E101B	Mouser
C406, C512, C861	3	UPJ1H101MPD6	Mouser
C409, C481, C708	3	UPM1E221MPD6	Mouser
C504, C603	2	ELE-500ELL1R0ME11D	Mouser
C505, C860	2	EEU-FR1C101B	Mouser
C507	1	ECA-1CM330B	Mouser
C510	1	EEU-FR1V102	Mouser
C515	1	UPM1E471MPD	Mouser
C611	1	EEU-FR1H4R7B	Mouser
C617	1	UCS2D470MHD1TO	Mouser
C705	1	LGU2D471MELY	Mouser
C710	1	LGU2Z331MELZ	Mouser
C711	1	UCS2C101MHD6TN	Mouser
C715	1	UPM1H471MHD1TO	Mouser
C858	1	ULD2C220MPD1TD	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.