Regulator B1274 and replacing it?

oam · 26th July 2007, 10:51 AM

Hi!

My Sony CD player has B 1274 as the regulator. I couldn't find anything about in from the net.

I'm modding my CD player for fun so I wonder if this regulator is any good or should I try replacing it with something better.

Picture attached.

oam · 27th July 2007, 07:58 AM

Is anyone famliar with this regulator at all? It sits in a Sony CDP990 player. Maybe it is some Sony specific version?

Isn't the last number supposed to tell you the voltage? I really wonder if it can be 4 in this case. I've never seen such a regulator and voltage.

Basically I would like to know what is the voltage it supplies to the player so I could make a proper replacement. I appreciate any tips to gain some progress on this.

DigitalJunkie · 27th July 2007, 09:33 AM

Sounds like a transistor to me
(2S)B1274

http://www.classiccmp.org/rtellason/...ta/2sb1274.pdf

oam · 28th July 2007, 08:53 AM

Thank you! That must be it...

Now my regulator upgrade is stuck however. I have no idea wheter this transistor is the one that should be replaced and with what. It is the only one with the heatsink on the board so I would assume so.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
replacing Dac	freakyone	Digital Source	1	24th November 2008 11:49 AM
Zener regulator with "integrated" pre-regulator	00940	Power Supplies	17	22nd July 2008 06:11 PM
Lithos regulator - A new super regulator?	peranders	Parts	7	8th May 2008 03:01 PM
Replacing 50K pot with 10K pot	KevinLee	Parts	10	10th December 2007 04:50 AM
replacing amp transistors	elaar	Solid State	52	13th March 2007 11:25 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

27th July 2007, 07:58 AM	#2
oam diyAudio Member Join Date: Jul 2007	Is anyone famliar with this regulator at all? It sits in a Sony CDP990 player. Maybe it is some Sony specific version? Isn't the last number supposed to tell you the voltage? I really wonder if it can be 4 in this case. I've never seen such a regulator and voltage. Basically I would like to know what is the voltage it supplies to the player so I could make a proper replacement. I appreciate any tips to gain some progress on this.

27th July 2007, 09:33 AM	#3
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 3	Sounds like a transistor to me (2S)B1274 http://www.classiccmp.org/rtellason/...ta/2sb1274.pdf

28th July 2007, 08:53 AM	#4
oam diyAudio Member Join Date: Jul 2007	Thank you! That must be it... Now my regulator upgrade is stuck however. I have no idea wheter this transistor is the one that should be replaced and with what. It is the only one with the heatsink on the board so I would assume so.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)