Sony STR-DE845 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

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
Reply
 
Thread Tools Search this Thread
Old 31st October 2008, 03:59 AM   #1
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Default Sony STR-DE845

Hey gang,

Just got one of these on the bench today,Symptoms are: No display,no sound,and no response from pushing buttons. Some of the LED's light up,the amp comes out of protect (relay's click),and everything else seems okay,all voltages are correct (as far as I can tell) and none of the regulators are suspect.

The display/front panel board is getting power,the VFD filaments are heating up,and there is ~31V on the "32V" point.

Does anyone have a schematic,or service manual? (or any tips on diagnosis?)


I'm thinking the board with the DAC/DSP/etc. is FUBAR. It appears it got wet at one point.I cleaned it with alcohol and a toothbrush,and dried it well. Some of the pins on the SMD IC's are a bit corroded/tarnished looking.

It might be hozed,but I'd like to take a good stab at it.


Thanks!
  Reply With Quote
Old 31st October 2008, 08:22 AM   #2
es44 is offline es44  Denmark
diyAudio Member
 
es44's Avatar
 
Join Date: Apr 2005
Location: Fredericia, DK
Hi DJ.

PM sent.
  Reply With Quote
Old 1st November 2008, 08:47 AM   #3
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Thanks!
  Reply With Quote
Old 5th November 2008, 06:34 AM   #4
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Well,It looks like this thing is dead.
The water damage corroded a bunch of pins on the small SMD IC's,and the digital board (with all the brains/controls) is about 80% dead from the corrosion,etc.

But,Thanks to es44 I've got the schematics! So,I've pulled the digital boards,and "hardwired" the speaker/power relays for now (I'll build some control circuitry for it later) and the power amps appear to be alive!

So,I've started stripping it down,and and going to turn it into a plain old 5-channel power amplifier.

I'll try to get some pics and stuff.
  Reply With Quote

Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


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 11:04 AM
Sony CDP-711... DoomPixie Digital Source 9 16th May 2007 01:33 PM
Sony PSX-800 fmak Analogue Source 0 18th September 2003 03:48 PM


New To Site? Need Help?

All times are GMT. The time now is 04:26 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2