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Louie, Technician
Category: Home Theater-Stereo
Satisfied Customers: 12272
Experience:  Have been in the business 25+ yrs., down to component level.
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Rx-s70 receiver won't power up after moving. It clicks and

Customer Question

rx-s70 receiver won't power up after moving. It clicks and gets warm from being plugged in but no display.
Submitted: 1 year ago.
Category: Home Theater-Stereo
Expert:  Louie replied 1 year ago.

Hi and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially, bear with us; re-confirm and post back that the unit is a Yamaha RX-S70. If yes, what other devices are connected to it? ...and have you tried with just the RX-S70 standalone?

Customer: replied 1 year ago.
I know that trick, I plugged it in just by itself, no display. I hear it click, and it gets warm overnight, but the display doesn't turn on.
Customer: replied 1 year ago.
It worked fine before we moved, so i thought it might be something jarred loose. I checked all that. I removed the cover and checked ac voltage and checked the fuses; everything was ok. I've seen this kind of thing when a capacitor gets knocked loose, etc.
Expert:  Louie replied 1 year ago.

Proposed preliminary checks (if have not been done):

  • • voltages of the collector and emitter of regulator Q218;
  • • the same for the collectors & emitters of Q220 & Q222;
  • and Q215.

Please post back results / observations of the above once tried.

A friendly reminder: voltage measurements by its very nature requires that the Yamaha be plugged in, turned ON and therefore LIVE! Please exercise due care and caution.

Customer: replied 1 year ago.
Ok, I will check it today.
Expert:  Louie replied 1 year ago.

Appreciate the post back and an update when able.