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View topic - str-v555es

str-v555es

This forum addresses questions on installation, configuration and troubleshooting you might encounter with your Sony Amp/Receiver/Speakers/Connections/Cables.

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by richard3158 » Fri Jun 08, 2012 5:50 am

My V555es  has just started to do this "push power button and nothing but a click"

any help please ?
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by jehill » Fri Jun 08, 2012 7:55 am

Welcome to Agoraquest!  When you say "...nothing but a click", do you mean that the front of the receiver is dark, i.e. no indication that the receiver is on?
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by richard3158 » Sat Jun 09, 2012 2:55 am

Yes , the receiver is dark when I press the power switch . I have the cover off and my volt meter ready I will start looking for fuse's

                                                                                I am thankfull for any help

                                                                                              Richard
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by jehill » Sat Jun 09, 2012 10:13 am

That's certainly the first step, checking the fuses.  The fuse(s) that you find blown will help narrow down the portion of the circuitry that has failed.  It sounds like the primary fuse has blown.
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by jehill » Sun Jun 10, 2012 7:35 am

OK!  I spent some thim this morning studying the STRV555ES schematics and determined that there would be no displays lit on the front panel if there was an open circuit in the voltage selection switch.  With the receiver unplugged, I would exercise the VOLTAGE SELECTOR, if there is one, at least ten times, making sure that you return it to the correct position for your location (presumably the original position).  I would also check 2.5A fuse F904.  If there is no VOLTAGE SELECTOR switch, check 2.5A fuse F901.
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by richard3158 » Mon Jun 11, 2012 3:32 am

Jehill :

 Thank you for the continued support . I wonder should I replace C1404 , C1408 , and C1410

around the heat sink on digital board ? would these stop receiver from power up ? I will flip the

voltage selector back and forth , and also check F904 and F901 . I saw where Sony has the

flat repair rate $ 119.00 , but sure do not want to box up and send to sony ! jehill I have 2

pinball machines that i keep running so I have A little board level repair skill . May be between

your help and my eyes and ears we can get my Es to light up again .


                                                                                                      Thank you

                                                                                                           Richard
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by jehill » Mon Jun 11, 2012 6:55 am

Do C1404 , C1408 and C1410 look like they need to be replaced?  If so replace them!  I see that they are all electrolytic capacitors.  Electrolytic capacitors are notorious for failure.  If an electrolytic capacitor connected across a power supply shorts out, it will either take out some of the associated power supply components or; hopefully, blow a fuse.  I would visually inspect all electrolytic capacitors and replace any with leakage or that are bulging.

Regarding fuses, if your receiver does include the VOLTAGE SELECTOR, there is no F901, only F904.  There are only four other fuses: F801 and F802 for B+ and B- to the output transistors and F805 and F806 for the + and - 5V supplies.  You need to check all of the fuses.

It definitely would be helpful if you had the service manual.
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by richard3158 » Mon Jun 11, 2012 7:00 am

just downloaded service manual , now we are ready.

                                                                              Richard
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