|
|
Post by Night Ranger on Apr 19, 2012 21:22:10 GMT -5
A friend purchased a Galaxy Saturn off of Ebay. It has no output even though the driver transistor and the final transistors check good. I have the service manual which states the voltage regulator tends to blow out on this radio. The schematic number is TR51. The service manual says to replace the original voltage regulator with an upgraded part - NTE-37. The friend came back with a similar looking part he got from someone that has the part number "B827 S 4M5". I can't find this part number anywhere to see if it is a match for the suggested NTE-37 12 amp 100 watt voltage regulator. Has anyone heard of the "B827 S 4M5" three terminal voltage regulator, and if so is it a suitable replacement for the suggested NTE-37?
Thanks,
Night Ranger
UPDATE: The full part number "might" me 2sB827. I found a datasheet for a 2sB827, but it looks to be a lower rated voltage regulator than the recommended NTE-37.
|
|
Sandbagger
Administrator/The Boss 
Posts: 6,250 
|
Post by Sandbagger on Apr 20, 2012 6:07:46 GMT -5
A friend purchased a Galaxy Saturn off of Ebay. It has no output even though the driver transistor and the final transistors check good. I have the service manual which states the voltage regulator tends to blow out on this radio. The schematic number is TR51. The service manual says to replace the original voltage regulator with an upgraded part - NTE-37. The friend came back with a similar looking part he got from someone that has the part number "B827 S 4M5". I can't find this part number anywhere to see if it is a match for the suggested NTE-37 12 amp 100 watt voltage regulator. Has anyone heard of the "B827 S 4M5" three terminal voltage regulator, and if so is it a suitable replacement for the suggested NTE-37? Thanks, Night Ranger UPDATE: The full part number "might" me 2sB827. I found a datasheet for a 2sB827, but it looks to be a lower rated voltage regulator than the recommended NTE-37. I would say that 2SB827 is the correct number. The regulators in those radios are PNP type power transistors. The actual part number to replace it is not critical, as long as the replacement is strong enough to handle the current. |
|
|
|
Post by cbrown on Apr 20, 2012 10:08:04 GMT -5
If the regulator is indeed lower rated, he'll run the risk of having it overload and stop working. I'd look for the recommended transistor and install that and be done with it.
|
|
