Novice in need of help

skiermurph · 20th December 2004, 05:39 PM

I have a NAD 2100 PE that has a few problems. Uopn inspection the parts that are visually damaged are a transistor marked 7f C3423 and also parts marked Q426 and R436. Like I said I am a complete novice, and really am just looking at trying to save an amp that is other wise ruined. Anyhelp on where to get these parts or advice on how stupid I am to even consider trying to fix this??

Stocker · 21st December 2004, 12:06 AM

those last two will be tough without a schematic... they are reference designators, not component names or values, the first I can't say off the top of my head.

If this device didn't die from a short-circuit on the output, you may want to find out the "other" reason it went south before spending too much time on it.

note: high-res. pictures ususally help.

anatech · 22nd December 2004, 01:52 AM

Hi skiermurph,
Okay, you have a 2SC3423 that is bad. Sounds like one channel of a stereo amp. So, you have another channel that is working and you can trace from there. DO NOT swap parts between the two channels. If you do you will have two dead channels in short order.
Look at the other channel and how the parts are hooked up. This should give you a clue. Now .... if someone has a schematic.
-Chris

20th December 2004, 05:39 PM	#1
skiermurph diyAudio Member Join Date: Dec 2004 Location: Colorado	Novice in need of help I have a NAD 2100 PE that has a few problems. Uopn inspection the parts that are visually damaged are a transistor marked 7f C3423 and also parts marked Q426 and R436. Like I said I am a complete novice, and really am just looking at trying to save an amp that is other wise ruined. Anyhelp on where to get these parts or advice on how stupid I am to even consider trying to fix this??

21st December 2004, 12:06 AM	#2
Stocker diyAudio Member Join Date: Dec 2003 Location: Austin	those last two will be tough without a schematic... they are reference designators, not component names or values, the first I can't say off the top of my head. If this device didn't die from a short-circuit on the output, you may want to find out the "other" reason it went south before spending too much time on it. note: high-res. pictures ususally help. __________________ Jesus loves you.

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
+/-15v dc stepdown for novice	Learnincurve	Power Supplies	10	3rd December 2007 07:46 PM
Could anyone help a novice?	sunnycue	Full Range	8	4th August 2006 05:45 AM
DAC question from a novice	fishwinker	Digital Source	6	17th June 2006 07:41 AM
Novice Schematics	dalcorn	Class D	4	24th July 2005 09:12 AM
reg psu q - stupid (novice!)	lazyfly	Chip Amps	14	10th September 2004 01:44 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

22nd December 2004, 01:52 AM	#3
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi skiermurph, Okay, you have a 2SC3423 that is bad. Sounds like one channel of a stereo amp. So, you have another channel that is working and you can trace from there. DO NOT swap parts between the two channels. If you do you will have two dead channels in short order. Look at the other channel and how the parts are hooked up. This should give you a clue. Now .... if someone has a schematic. -Chris

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