Question about Onkyo LS-V955 System
Onkyo SR-DR2.2 immediately switched off goes back to standby with blinking red standby LED right after power-on. This happens last week once during DVD viewing but was able to power on and continue DVD viewing without any issue. Yesterday, it shuts off during DVD viewing and unable to stay powered on where it switches back to standby with standby LED blinking. What is wrong with this issue? Anyone has the same problem? Any solutions? Thanks
Have already posted this fix twice, but to be sure hunglam_1999 receives notification, doing so again 27Oct2009:
Most common failure is the audio amp IC, reference # Q5001, which is an STK402-950 (Onkyo Pt. # 222123). Typically fails as a result of excessive volume levels or as a result of problems with the speakers or their wires. If you're technically inclined, the part can be had from various vendors & is fairly straightforward to replace once the complex disassembly required to access the PCB this IC resides on is accomplished, using standard soldering skills. A repair of this type by a reputable servicer may be more effective for non-technical folks, as typically can be accomplished for $200 or less, much less than replacement cost...
Posted on Oct 27, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
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Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
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