|Solid State Talk all about solid state amplification.|
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|
|2nd September 2009, 04:08 PM||#1|
Join Date: Dec 2003
help please, distorting mosfet power amp.
hi its a citronic ppx 1200.
I have the schematic, there isn't much in it, I set to work blind.
symptoms are distortion on one channel, clip light is coming on.
I replaced some electrolytic capacitors whilst I was at it, and replaced both clip section transistors,
channel is still distorting.
and 5 mosfets output stage
I was going to start on the driver stage replacement, any tips if I am in the right place?
oh it also has a debalancing 4580? opamp
vol controls are alps blues which are known to go duff.
what should I replace that with? for '[best' sound, its a very nice sounding mosfet amplifier, with not much wrong and fairly!!! easy access. rather heavy at 30kg tho
|2nd September 2009, 08:42 PM||#2|
Join Date: Nov 2008
Location: Devon UK
Can you get access to an osciliscope because this will save a lot of time and guesswork?
You have a good channel to compare, so you if you can scope the amplifier you could easily track down the faulty area. Without a scope you really are trying to fix the amplifier 'blind'.
There is no point in upgrading any components untill you have fixed the fault!
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Meridian MCD Distorting||doarkface||Digital Source||0||10th February 2009 07:47 PM|
|Distorting Accuphase E-302||reins||Solid State||6||18th January 2007 07:48 AM|
|Distorting 5687 preamp circuit||dsavitsk||Tubes / Valves||13||14th June 2006 02:31 AM|
|Sub distorting - help please||Simpleton||Subwoofers||8||14th August 2005 06:56 AM|
|Mackie power amp distorting||javey||Solid State||2||20th April 2005 03:45 AM|
|New To Site?||Need Help?|