I want to rebuild the Power Supply Board (2039-1). I would like to verify the components before ordering if possible. My board does not have the fuse change as detailed in the November 1971 service bulletin, so I will make that change as well. The parts are as I have found elsewhere on this forum are: (correct part locations?)
POWER SUPPLY BOARD:
1 512-1N4751ATR 30V 1 WATT ZENER DIODE - (CR976)
5 512-1N5408 3 AMP RECTIFIER DIODES – (CR971 through CR975)
2 863-1N5929BRLG 15V 3 WATT ZENER DIODE – (CR977, CR978)
1 647-TVX1V102MCD 1000UF 35V AXIAL LEADS – (C983)
1 647-TVX2A471MCD 470UF 100V AXIAL LEADS - (C974)
2 647-UPW1H221MPD 220UF 50V – (C979, C980)
3 647-UPW1H101MPD 100UF 50V – (C982, C984, C985)
2 647-UVZ1J332MRD 3300UF 63V OK! – (C975, C976) (Big change here)
2 693-0031.8231 FUSE SOCKET - (used to satisfy SB above)
2 576-0313005.MPX 5 AMP 250V LITTLEFUSE CARTRIDGE FUSE - (used to satisfy SB above)
1 594-5083NW180R0J 180 OHM, 2 WATT RESISTOR (R983)
Resistors – I would like to know if these values are correct, and what brand would be suggested as to their replacement. Not sure if they need replacing, but would like to add them to the items above. Some values I am not sure of due to the color band aging, and I may have made a mistake in the others as well.
R986 – 330 ohm, 5%, 1 watt
R987 – 33 ohm, 5%, ½ watt
R988 - 33 ohm, 5%, ½ watt
R989 - 330 ohm, 5%, 1 watt
R982 - 33 ohm, 5%, ½ watt
R984 - ??
R983 – 180 ohm, 5%, 2 watt
R985 – 4.7K ohm, 5%, ½ watt
R981 – 100 ohm, 5%, ½ watt
R980 – 18K ohm, 5%, ½ watt
R979 - ??
R972 – 120 ohm, 5%, ½ watt
R971 – 1.2K ohm, 5%, ½ watt
R973 – 4.7K ohm, 5%, ½ watt
Film capacitors – not sure if these should be touched, nor am I certain of their values.
C971 -
C972 -
C973 -
C977 -
C978 -
Transistor – Have no idea here at all! Does this fail??
Q972 –
I hope this is all of the components on this board. Please let me know were I am wrong, etc. Thanks!
POWER SUPPLY BOARD:
1 512-1N4751ATR 30V 1 WATT ZENER DIODE - (CR976)
5 512-1N5408 3 AMP RECTIFIER DIODES – (CR971 through CR975)
2 863-1N5929BRLG 15V 3 WATT ZENER DIODE – (CR977, CR978)
1 647-TVX1V102MCD 1000UF 35V AXIAL LEADS – (C983)
1 647-TVX2A471MCD 470UF 100V AXIAL LEADS - (C974)
2 647-UPW1H221MPD 220UF 50V – (C979, C980)
3 647-UPW1H101MPD 100UF 50V – (C982, C984, C985)
2 647-UVZ1J332MRD 3300UF 63V OK! – (C975, C976) (Big change here)
2 693-0031.8231 FUSE SOCKET - (used to satisfy SB above)
2 576-0313005.MPX 5 AMP 250V LITTLEFUSE CARTRIDGE FUSE - (used to satisfy SB above)
1 594-5083NW180R0J 180 OHM, 2 WATT RESISTOR (R983)
Resistors – I would like to know if these values are correct, and what brand would be suggested as to their replacement. Not sure if they need replacing, but would like to add them to the items above. Some values I am not sure of due to the color band aging, and I may have made a mistake in the others as well.
R986 – 330 ohm, 5%, 1 watt
R987 – 33 ohm, 5%, ½ watt
R988 - 33 ohm, 5%, ½ watt
R989 - 330 ohm, 5%, 1 watt
R982 - 33 ohm, 5%, ½ watt
R984 - ??
R983 – 180 ohm, 5%, 2 watt
R985 – 4.7K ohm, 5%, ½ watt
R981 – 100 ohm, 5%, ½ watt
R980 – 18K ohm, 5%, ½ watt
R979 - ??
R972 – 120 ohm, 5%, ½ watt
R971 – 1.2K ohm, 5%, ½ watt
R973 – 4.7K ohm, 5%, ½ watt
Film capacitors – not sure if these should be touched, nor am I certain of their values.
C971 -
C972 -
C973 -
C977 -
C978 -
Transistor – Have no idea here at all! Does this fail??
Q972 –
I hope this is all of the components on this board. Please let me know were I am wrong, etc. Thanks!