I've had this unit for around three years, I believe, and it has worked relatively well up until now. However, now when I turn on the system, it will work for a short period of time, but then a popping sound is emitted from the speakers, and the system goes either into standby, or shuts off completely. The only past problem I've had with it is that the sound would periodically fail to initialize upon turning the unit on. Any information on the problem is greatly appreciated.
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You should check the coil mattress cover. Feel around to make sure nothing is puncturing the bladder. It is not normal for them to fail like that. When you deflate it, you must make sure all of the air is out of the bladder before folding the unit back into the sofa. If you don't, you make end up with a problem at the seams.
I'm not familiar with this model, but other boxes I've used have all had some kind of power level indicator to show their charge level. I'm sure yours does too. Charge it at least until the indicator shows it's full. You can leave the unit charging for as long as you want, actually. The charging circuitry drops to a low trickle when the unit is fully charged, and won't damage anything by overcharging. (We have one where I work. As soon as we're done jumping something it goes back on charge, and it's over three years old now.)
The HP DV6815nr has a High end processor I think it sould be around 2.0 ghz.
I run a TL-64 and it is a 2.2 ghz.
The problem is the heat transfer and the best thing you can do is, keep the unit well ventelated.
The 6815 is not very old and should still be within warranty.
HP has had alot of problems with the 6000 and 9000 units, related to heat.
HP has offered a extened 1 year on top of the 1 year warranty. This means, if you purchased this unit 1 1/2 years ago, it still has 6 months of warranty ava.
Do yourself a favor and contact HP customer care and they will send you a Pre-Paid box for shipping back to the factory of repairs, at no cost to you.
The turn around time is 7 working days.
Don't waist time.. !!
It is likely the battery. These batteries are designed to last 3-6 years in a UPS. The good news is that if it is the battery, it is completely user replaceable and you'll have a Cyber Power unit that works just like new with a new battery. What may have happened is that the battery was weak, and you may have had a slight dip in the AC power. This caused the Cyberpower unit to switch over to the weak battery which couldn't handle the load. The unit then turned off. When you press the "ON" button, the unit will go through a self-test that checks all of the components and the unit will not turn on and be functional unless all of the components come back with a PASS, including the battery. If possible, test the battery with a voltmeter, it should read around 13.5, but not lower than 11.5v DC. However, with the unit over 3 years old, it almost certainly the battery. Here's a link to a replacement battery for the CP685AVR: http://www.batteryinternational.com/cyber-power-cp685avr-ups-battery-ups-batteries-f1.html
Your cooling unit is shot, I suggest. Most likely, you've lost the R341 refrigerant. Norcold, so they can sell you another cooling unit at $500+, does not make these little fridges with a service port so you can recharge the system. Same with Dometic. Solution is to spend, again, $500+ for a new sealed unit that will fail in relatively short order (I'm on my second in five years) or buy a better refrigerator. I'm opting for a new fridge this go around (Vitrifrigo). Vitrifrigo has the needed service port.
This Problem needs an expert Technician:
Your problem is due to a missing Voltage around -30 volts that supplies the screen Processor. It could be an open low value resistor or defective switching transistor.