Question about Sony STR-DE845 Receiver
My center channel has stopped working. There is no output to the center speaker no matter what position switches are in. The speaker itself worked well when tested from one of the stereo outputs. The receiver makes clicking noises occasionally. There is no fault displayed on the front panel. The entire system has been used as currently set up for several years mow. I'm not proficient at repairs but have a friend who is. If I give him the right place to look, he could repair. Any suggestions?
I have fixed 3 shorts on my de845. 2 have been caused by cracked solder joints. they were speaker cutout problems...yours most likely is the center channel relay on the main board. take the thing apart. you need to get to the back of the main board and re-flo those solder joints. get your geeky pc buddy and do it together(buy him a sixer). its really not that hard...just a bunch of screws. disconnect everything from the main board including the front plate. be careful with the ribbon cable...mine is hurting at this point. not meant to be removed so many times. put it in straight. my leads bent, but was able to straighten them. there are 5 relays together, one for each channel. they are white cubes and prb a little smaller than the tip of your finger. its the 4 leads on each of these that you want to take a soldering iron to . i'm not sure which ones the center channel so do them all in that area. it may be hard for you to tell which leads they are so just go overboard and at least get everything in the vacinity. i did all component leads because who's to say another's not ready to go bad. you've gone this far. touch the heated up tip to all the leads at the very end of the barb. you can reflow the solder without actually touching it. the metal lead will get hot enough. hold it until the solder liquifies, then let it cool. do this on a flat surface. my other fix once was a re-seating at the speaker switch a,b,a+b on the front plate. there are 2 boards plugged together there. i bent the leads slightly so they seated in more tightly. if your left or right front goes out, sometimes thats an easy fix...try b if you're using a, or the opposite. don't forget the speaker cables. if you're using both zones then you prb already figured out you need to re-flo! test and cross your fingers. good luck.
Posted on Jul 27, 2007
Posted on Dec 20, 2007
I found the speaker switch solder joints had cracked. First I did the lead bending as suggested above, but that only worked for a short while. "my other fix once was a re-seating at the speaker switch a,b,a+b on the front plate. there are 2 boards plugged together there. i bent the leads slightly so they seated in more tightly."
Resoldering the 5-pin connector to the board fixed it; about a year now.
Posted on Sep 08, 2008
2 quick things to check: 1. make sure that if the unit uses pre-out / main-in jumpers that they ARE present. 2. Check that the Tape 2 monitor is not engaged
Posted on Mar 27, 2006
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Posted on Jan 02, 2017
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