Receiver display goes off

[Sylar]

I got a new Marantz 7005. We had 3-4 power cuts when the receiver was on & playing (playing through USB - pen drive). Today when I switched the receiver on after the power cut, the display used to come on for a few seconds and go off before I play anything. The receiver used to be on though. I switched it off then turned it on a few times and it continued to behave same way. I reset the microprocessor then it got fixed. (2 displays in 7005 - both went off. I didn't notice if the blue ring round one display was on or not)

Why did this happen & wat's the issue here? Should I be worried with these power cuts? Would it cause any kind of problems?

I do use an APC-1200 KVA voltage stabilizer.

 

[TLS Guy]

I got a new Marantz 7005. We had 3-4 power cuts when the receiver was on & playing (playing through USB - pen drive). Today when I switched the receiver on after the power cut, the display used to come on for a few seconds and go off before I play anything. The receiver used to be on though. I switched it off then turned it on a few times and it continued to behave same way. I reset the microprocessor then it got fixed. (2 displays in 7005 - both went off. I didn't notice if the blue ring round one display was on or not)

Why did this happen & wat's the issue here? Should I be worried with these power cuts? Would it cause any kind of problems?

I do use an APC-1200 KVA voltage stabilizer.

The issue is weather. You are lucky you still have a functioning receiver.

We go over this again and again.

A voltage regulator without battery backup is pretty much useless.

There is no absolutely bullet proof solution.

However whole house surge protection and a smart UPS will likely prevent 99% of events.

You need a UPS that will transfer to battery in 1 to 5 msec when voltage goes up or down in a narrow specifies range, and will keep powered from the battery until the instability is over. In prolonged events or power loss, it will power your system down gently.

I'm tired of these posts, and even more tired of people saying this is overkill. It is not, it is what you absolutely need to do to protect your equipment, in these days or more frequent and severe weather events.

Because of complexity, equipment is much more vulnerable. This means you need to do it right.

My systems save my gear again and again and again.

 

[Sylar]

The issue is weather. You are lucky you still have a functioning receiver.

I presume by weather you mean - bad weather which usually equates to power cuts / fluctuations. I remember when I had this issue the weather was fine. But we have power cuts back at home even if weather is fine . It is this yearly supply thing we face every summer where hydro power supply production drops as a result of not enough monsoon & dry rivers

However whole house surge protection and a smart UPS will likely prevent 99% of events.

This is not feasible. I can provide UPS & surge protection for only sensitive equipment. I have a UPS for my comp, now using it for my receiver thanks to your advice.
What kind of surge protection can I use now, on top of the UPS? I presume you mean UPS would not suffice here? Would I need to connect the voltage regulator (which comes with surge protection), before the UPS??

I'm tired of these posts, and even more tired of people saying this is overkill. It is not, it is what you absolutely need to do to protect your equipment, in these days or more frequent and severe weather events.

Because of complexity, equipment is much more vulnerable. This means you need to do it right.

My systems save my gear again and again and again

...and thanks again for the advice, if not I wud still be using a stabilizer, and god knows what impact. This advice my dad too mentioned immediately that it needs a UPS, before I created this post. I wanted to hear it again over here before I used a UPS.

You need a UPS that will transfer to battery in 1 to 5 msec when voltage goes up or down in a narrow specifies range, and will keep powered from the battery until the instability is over. In prolonged events or power loss, it will power your system down gently.

Currently I am using a UPS that I use for my PC. It is 500 KVA, havent pushed my AVR to play high volumes bcos of this. I will probably purchase one this week or next week. Is there any specific kind of receiver I need to be looking at? I know I require about 1 KVA. I had read some posts in another forum with a 'hot debate' over sine wave & square wave UPS.

 

[TLS Guy]

A power strip surge protector will add no protection above what the UPS will provide, and should not be used.

Why is whole house surge protection not feasible?

I use an UPS systems from APC.

I would have thought you need 1.5 kva at least to drive a receiver.

Remember you must meet apparent and actual power needs in an AC circuit.

 

[Sylar]

A power strip surge protector will add no protection above what the UPS will provide, and should not be used.

Why is whole house surge protection not feasible?

Will explore this a bit, and see. But wiring might need to be redone to some extent.

I use an UPS systems from APC.

I would have thought you need 1.5 kva at least to drive a receiver.

Remember you must meet apparent and actual power needs in an AC circuit.

The receiver has 700W rating at the back. With a PF of 0.7 It comes out to about 1 KVA. Whats your reasoning for 1.5 KVA big difference from 1 KVA.

 

[TLS Guy]

Will explore this a bit, and see. But wiring might need to be redone to some extent.


The receiver has 700W rating at the back. With a PF of 0.7 It comes out to about 1 KVA. Whats your reasoning for 1.5 KVA big difference from 1 KVA.

That makes sense since receivers can't output full power all channels driven.

I was just adding up seven 100 watt channels plus the usual losses of an A/B output stage.

So you can see right here how receivers short change you.