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anyone own a Tandy 2000 or manuals?

Chris2005

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Mar 4, 2005
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my power supply is blown. I guess I could figure it out if I wanted to dismantle the whole thing, but I'd like to know what voltages get fed to the motherboard connector. Thanks indeed.
 
hope this helps:

http://www.radioshack.com/ProdSuppo...tailIndex.asp?P=support_computer&D=2512&T=htm

TANDY 2000 (260-5103) Specifications Faxback Doc. # 1941

Dimensions: 19 x 16 x 6 Weight: 26.5 lbs.
Processor: 80186 CPU Speed: 8 MHz
FCC Class: A, UL Listed Wait States: N/A
Add. Device Exp: N/A
# of Slots: 4 (96-Pin Euroconnector) Std. Memory: 256K
MTBF: N/A Max. Memory: 768K
Op. Sys: 2000 MS-DOS Only *Not PC Compatible*
Video: Built-in Mono/Optional Power Supply: 45 to 135 VAC, 60 Hz,
Color 136 Watts
Heat Output: N/A Keyboard: 90-Key Sculptured
Std. Ports: Math Co.: 8087 8 MHz Intel
Monochrome Video-(8 Pin Din) Floppy: 720K 5.25" DS 80 Track
Serial-(DB-25 F) Environment: Operating: 55 to 96 F
Centronics Parallel-(34 Pin Header) Storage:-40 to 160 F
Monochrome Video-(8 Pin Din) Humidity: N/A

CURRENT BIOS ROM Version: 02.00.00 Utilities Version: N/A
 
if you go to the link i provided in my first reply, you will find many documents on the 2000 and other computers by tandy

for example:

TANDY 2000 (260-5103) Pinouts Faxback Doc. # 1944

GND = Ground NC = Not Connected * = Active Low Signal

Printer - 34 pin header: Floppy - 34 pin card socket:

1 Strobe* 2 GND 1 GND 2 NC
3 Data 0 4 GND 3 GND 4 In Use*
5 Data 1 6 GND 5 GND 6 NC
7 Data 2 8 GND 7 GND 8 Index*
9 Data 3 10 GND 9 GND 10 Drive Select 0*
11 Data 4 12 GND 11 GND 12 Drive Select 1*
13 Data 5 14 GND 13 GND 14 NC
15 Data 6 16 GND 15 GND 16 Motor On*
17 Data 7 18 GND 17 GND 18 Direction*
19 Acknowledge* 20 GND 19 GND 20 Step*
21 Busy 22 GND 21 GND 22 Write Data*
23 Paper Out 24 GND 23 GND 24 Write Enable*
25 Select* (busy*) 26 Strobe In 25 GND 26 Track 0*
27 GND 28 Fault* 27 GND 28 Write Protect*
29 In 0 30 In 1* 29 GND 30 Read Data*
31 GND 32 In 2 31 GND 32 Side Select*
33 GND 34 Buffer Full 33 GND 34 Drive Ready*

Keyboard - 5 pin DIN: Monochrome - 8 pin DIN: Serial Port - DB-25 Female:

1 Keyboard Data 1 NC 1 GND
2 Keyboard Busy* 2 GND 2 Transmit Data
3 GND 3 Intensity 3 Receive Data
4 Keyboard Clock* 4 Horizontal Sync 4 Request to Send
5 +5V 5 Vertical Sync 5 Clear to Send
6 NC 6 Data Set Ready
Power Connector (2): 7 Video Signal 7 Signal Ground
8 NC 8 Carrier Detect
1 +12V (orange) 9 NC
2 GND (black) Speaker - 2 pin header: 10 NC
3 GND (black) 11 NC
4 +5V (red) 1 Sound 2 GND 12 NC
13 NC
Color Monitor on Mouse Interface on 14 NC
Graphics Board: Digi-Mouse Board: 15 Transmit Clock
16 NC
1 GND 1 GND 17 Receive Clock
2 GND 2 +5V 18 NC
3 Red 3 Switch 3* 19 NC
4 Green 4 X-Axis Phase A 20 Data Terminal Ready
5 Blue 5 X-Axis Phase B 21 NC
6 Intensity 6 Switch 2* 22 Ring Indicator
7 NC 7 Switch 1* 23 NC
8 Horizontal Sync 8 Y-Axis Phase A 24 NC
9 Vertical Sync 9 Y-Axis Phase B 25 NC

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