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.

Sony STR D565
Sony STR D565
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 4th April 2009, 06:46 PM   #1
dannycelluk is offline dannycelluk  United Kingdom
diyAudio Member
Join Date: Mar 2009
Default Sony STR D565


I recently found my dads old Sony STR D565 in the loft. I was wondering if anyone has any suggestions for modification to improve this Amp. Or if it would even be worth modifying?

Pictures of PCB layout below.

I also have a PDF of the schematic of the boards but not sure how to upload that on to here.







  Reply With Quote
Old 18th May 2010, 06:23 AM   #2
CDRBurner is offline CDRBurner  United States
diyAudio Member
Join Date: May 2010
I don't have an answer but another question, sorry, dannycelluk.

I was playing an LP through this unit when the sound cut out. I replaced the (blown) fuse (seen at the top-left of dannycelluk's first image, above) but the replacement blew as soon as I turned on the power.

Is this enough information for someone to diagnose the problem and recommend a fix?
  Reply With Quote
Old 18th May 2010, 09:11 AM   #3
east electronics is offline east electronics  Greece
diyAudio Member
east electronics's Avatar
Join Date: Jan 2006
Location: Athens GREECE
list of upgrades

----take samples of electrolytics , measure for leak or drifted values and replace ...
----while replacing you may be able to use better quality ,higher temperature ,
----while replacing caps that are located in power filtering can be increased both in voltage and value ...higher voltage will provide better linearity and longer life while higher value will provide better filtering
---- replace electrolytics 2.2 mfd style with film capacitors of good quality if these are located in signal way in the input or output of various divisions like tone control ,volume buffer ,amplifier input
----if your amp features bigger electrolytics in these sections like 10 mf you may replace them with better electrolytics and by pass them down under the board with good quality film 220 nf

---- Replace trimmers for idle and offset with multi turns will provid mire accurate tuning

----replace the psu caps with the biggest available possible to fit on the pcb /bypass with 100nf film down under

---- check the front stage of the amplifier ... replace all resistors in the ltp area with 1% metalfilm of the same value

---- check if transitors used ther to see if they are perfectly matched if not replace with a perfectly matched pair ( with in the possible )

---- remove totally zobel circuit from the output relocate it on the binding post and use a separated return to ground from it .....

all these upgrades are quiet easy to make and the benefit from them is marginal .... but getting 2% from here and 3% there is quiet big improovemnt totally

whne finished you may also try to beef up the idle to a small margine to achive more temperature and a bit of more class A quality

regards sakis
  Reply With Quote


Sony STR D565Hide 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
Sony CDP-337ESD v Sony CDP-X33ES which is best? eldarvanyar Digital Source 0 10th January 2008 12:04 PM
Sony CDP-711... DoomPixie Digital Source 9 16th May 2007 02:33 PM
Sony PSX-800 fmak Analogue Source 0 18th September 2003 04:48 PM

New To Site? Need Help?

All times are GMT. The time now is 07:47 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio