Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Oscillating Transistors?
Oscillating Transistors?
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
Thread Tools Search this Thread
Old 26th October 2007, 05:04 PM   #1
DreadPirate is offline DreadPirate  United States
diyAudio Member
DreadPirate's Avatar
Join Date: Jan 2006
Location: Athens, GA
Default Oscillating Transistors?

I have a bad transistor in the FM IF Board of the HK-330A receiver. It is an 2SA234, a Ge PNP small signal BJT. I got a cross to an NTE160, not wanting to buy ancient old stock. So, what is this oscillating issue and how can I determine if the replacement is a candidate? Can this happen with any transistor in the circuit, or just the outputs?

Here is service manual for the 330A showing the transistor, it is used TR-102 thru TR-105. I have all of them off and am ready to install 3 2SA234 and the 1 NTE, where would chance of oscillating be minimized if it could happen?


Cut sheet for NTE160:

Cut sheet for 2SA234:
datasheetarchive site is down.
  Reply With Quote


Oscillating Transistors?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
PSU oscillating apolon34 Power Supplies 3 24th June 2005 02:20 PM
Oscillating DoZ rchua77 Solid State 1 30th January 2004 10:07 AM
Oscillating P3A sobazz Solid State 8 28th July 2003 05:21 PM
Oscillating amp. DaViruz Solid State 23 5th December 2002 01:50 PM

New To Site? Need Help?

All times are GMT. The time now is 05:58 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio