..when connected to power makes a constant low level clicking noise but provides absolutely no function at all. I have 2 yr old twins who may well have done something to it but I can't get a response at all.Unit cost a fortune 18 months ago and has barely been used. Any suggestions?
A clicking noise when there's a hard drive present usually does not bode well for the end user. This noise is lovingly known as the "click of death" and it's name says it all.
I'm wondering if maybe the hard drive has gone and the JVC's error handler does not allow it to progress past POST while there is a hardware error present.
My apologies, I know that this isn't a solution, but hopefully this will at least help answer some of your questions as to what's going on....keep in mind that this is ultimately a guess, however, based on what I do know about electronics hardware.
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If the drive is out of warranty, and you have important data on the drive, and you can't afford to send it to a company to retrieve your files and have tried absolutely everything to get get it off, you can try this: Put the drive (and silicon packs in there if available to absorb moisture) in an air-tight ziplock bag. Place it in the freezer wrapped in a towel for a few hours. (Chilling the drive makes the metal inside the drive contract enough for the arm to function properly)
Remove from the freezer and immediately attach to the computer. If detected, transfer files immediately. The drive will heat up quickly and the mechanical failure will return.
I'm not sure of what sound it could be making. However, keeping it simple and attempting to answer the question as asked: Check the power steering fluid first. If it's low, add power steering fluid approved for your vehicle to the proper level. Never use transmission fluid as it aerates (like shaking a bottle of dish detergent) and doesn't provide the proper protection. Your van is equipped with a filter in the power steering system.
If the power steering reservoir is at an appropriate level. I would have the front brakes inspected, and/or the Constant Velocity joints inspected, depending the type of noise.
Often over the years the Transformer laminations can loosen, from the on/off rising and collapsing magnetic fields, and then they sorta hum louder. I suspect this is what is going on. Shouldn't be too much of a worry.. keep an eye on it tho.
Problems associated with low power steering fluid… Hard Vehicle Steering A low power steering fluid level can often times cause a vehicle's steering to become hard and labored. Adequate amounts of power steering fluid are necessary to enable a vehicle's power steering system to function and operate at optimum levels. A lack of power steering fluid in a vehicle's power steering system reduces the amount of hydraulic fluid pressure necessary to efficiently operating the various parts of the entire power steering system. Power steering fluid supplies the fluid force needed to operate the power steering gears and to enable power steering gearbox operation. Low power steering fluid levels reduce this hydraulic pressure, which commonly results in hard vehicle steering. Pump Noise It is very common for a low power steering fluid level to cause significant power steering pump noise. An adequate amount of power steering fluid is required to ensure the proper function and longevity of a power steering pump unit, which is a belt-driven pump responsible for housing and circulating power steering pump fluid. A low level of power steering fluid results in increased power steering pump friction, heat, and wear, all of which can significantly reduce the operational life of the power steering pump while at the same time cause excessive power steering pump noise. Fluid Boiling
Many times a low power steering fluid level can result in excessive heating of power steering fluid, a condition that can seriously degrade the fluid and cause it to boil. A low power steering fluid level results in less available fluid to both lubricate and cool a power steering pump unit. A lack of power steering pump lubrication and cooling leads to excessive heat being generated within the power steering pump unit itself, a condition that translates into the available level of power steering fluid becoming super-heated and degraded. When this happens it is common for the power steering fluid to boil and lose all of its lubricating and heat-reducing capabilities.
The power steering gearbox is a set of gears within a vehicle's power steering system designed to facilitate movement of a vehicle's front wheels. The power steering gearbox is connected to the power steering pump by hydraulic fluid lines that deliver a constant supply of power steering fluid to the power steering gearbox. A low power steering fluid level, especially a chronic and severe low power steering fluid level, can lead to increased friction and wear within the power steering gearbox assembly, a condition that can significantly shorten the operational life of the power steering gearbox and negatively affect its operation
This is what I would do before chalking this thing up as a hard ware failure try connecting thie to another adpator if that then does not work you indeed got a HW failure with the laptop and the motherboard would likely need to be replaced, Get it evaluated by a technition the geek squad at any best buy wull be able to test this real quick for you do not loose a good laptop over a faulty adaptor trust me this is where the issue could result.
thanks and please do leave postive feedback, ratings for your free naswer today.
good day, if you already replaced the fuse and still keeps on blowing it again. you still have a short circuit somewhere within the power supply area or board.try to check if there are any other blown parts or slightly expanded shape part specially for capacitors near the power supply area .
2) If you do have multi tester and have some basic knowledge with component checking try to check the polyswitch protector, this is connected parralel to AC supply right after the fuse before going to voltage rectifier diode.
3) if it doesn't have a polyswitch protector check the polarity of your rectifier diode, maybe 1 of this 4bridged diode is shorted.
The buzzing sound were feed back from power supply regulator if you can replace all of electrolytics capacitor in power supply block you will fix this problem or replace complet PCB
I need the correct model of your JVC DVD recorder
No sound problem is power amplifier trouble maybe the IC there is
defected or cold solder of joint of the parts.Cold solder issues - each
component is soldered into small
holes on the printed circuit board which in turn connects said
component to the
other components. Due to time, heat, use, some solder joints would be
or loose. It is possible that the cold solder is still minimally
(hanging by a thread). When the receiver turns on heat would be
generated which would
be sufficient to further loosen up the solder joint to the point it no
provides electrical contact. Jarring the unit creates movement inside
re establish the contact, sometime good enough sometimes not enough.
Again, since the unit still operates (sometimes) then it is highly
probable that there are no defective components. As you have surmised, it is
possibly a loose connection, solder joints are "connections"
except that molten soldering lead is used to attach/connect the component to
the board, "loose connection" in this sense is equal to "cold
Again on the assumption of no defective parts, then seeking a more experienced
buddy for the soldering might be to your advantage. This is of course in
addition to the possible electrical hazards when repairing....If i have helped,please click fixya.It is the only way i get paid for my work...