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II want to sell 464 qty RCA TIP41A NPN silicon transistors-do you know of any purchasers?

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Put 'em on eBay and see who bites.

Posted on Mar 26, 2011

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When power is turned on, standby light comes on normally, but in any playing mode, the receiver switches off and the standby light flashes.


It looks like this is a common problem with a lot of the Sherwood Receivers. I've had the same problem with my R-125RDS for a while now. Finally hit on solution today by replacing a power transistor. The transistor in question is not on the power amp board but instead screwed to the chassis and wired to the mainboard. I believe it is part of the output short protection circuit. In my case the component was a 2SD2059 (silicon NPN 100V,5A) replaced by equivalent 2SD1407. The transistor seems to run pretty warm so I guess this is why they ultimately fail after a few years.

Sep 17, 2011 | Sherwood RX-5502 Receiver

1 Answer

What is full meaning of the following codes in design and constructing an inverter-NE55,CD4013,JRC455,A733,IRFP150,1N4007,C945.


These numbers are the identification of some electronic devices that probably are being used in the inverter's circuit:

CD4013 - Dual D Flip-Flop integrated circuit
1N4007 - 1 A rectifier diode
IRFP150 - power MOSFET
A733 (2SA722) - PNP silicon transistor (low frequency amplifier)
C945 (2SC945) - NPN silicon transistor (low speed switching)

I could not find the devices marked JRC455 and NE55 - maybe they were not correctly marked, but there are some devices which have similar designations: JRC4559 is a dual operational amplifier integrated circuit and the NE555 is a time/oscillator integrated circuit.

You can download their datasheets from

http://www.alldatasheets.com

Hope this information can be useful!

Mar 09, 2011 | Electronics - Others

1 Answer

I HAVE APEX GT2015DV WITH HORIZONTAL OUTPUT BAD I NEED CROSS TO CHANGE IT I CANT FIND D2102 HORIZONTAL ANY BODY KNOW ANY REPLAC3EMENTO FOR D 2102 THNKS IN ADNVANCE


If it's transistor then, look for 2SD2102:
2SD2102 - SILICON NPN TRIPLE DIFFUSED LOW FREQUENCY POWER AMFPLIFIER - Hitachi Semiconductor.N Sabre

Nov 07, 2009 | Apex Digital Televison & Video

1 Answer

The monitor on shows black screen only


Hello

We sell a full parts kit that comes with both 40T03GPs and the pico fuse that needs to be replaced and the 2 capacitors, the kit runs $16.00 and free shipping. If you want to purchase one go to:
www.ccl-la.com/LCDrepair1.htm , that link also has the repair guide showing where the fuse and caps need to be replaced.

Buddy
Corporate Computer
www.ccl-la.com

Jul 14, 2009 | Acer AL1916W 19" LCD Monitor

1 Answer

C5707 available at?


from an old post (at Dell):
The TIP3055 handles about 70V and 10 Amps and is an NPN, so I decided to purchase four 2N3055 TO220.

from another one:
was able to successfully directly substitute MJE3055 NPN transistors for those on the original board

They are "equivalent", but (much) bigger: you must do some bending for them to fit inside the chassis

Ro

Sep 09, 2008 | Dell E172FP 17" LCD Flat Panel Monitor

1 Answer

Pioneer amph sa 9500 II


Hi yalazogeday

Your amp is fitted with two 2SD588A (NPN) and two 2SB618A (PNP) power transistors in the output stages. Click on the part for a place to get them from. These parts are no longer available from Pioneer, nor are the prescribed replacements. (the amp was built in 1978) Because of the unusual transistor package used, you may have to upgrade to a more modern transistor, and modify the mounting also.

robotek


May 24, 2008 | Audio Players & Recorders

2 Answers

Green glow


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s

Feb 21, 2008 | RCA P46921 46" Rear Projection Television

2 Answers

Bose Radio doesn't turn on


The problem is a shorted NPN surface mount transistor on solderside of the PCB. It is located underneath of R402.

This transistor is used to switch power to the unit.

 

Hap Nguyen

nguyen_6@earthlink.net

Sep 26, 2007 | Bose Wave Radio

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