We have a star theatre which does not work. The battery housing on the lght wand has a coil missing so we went and bought a 6 volt adaptor but it still does not work. This is a Xmas present for our grandson and he is very disppointed not to be able to use it

Free online manual:

https://www.manualslib.com/products/Homedics-Sound-Spa-Classic-Ss-4000-1865320.html

HoMedics Sound Spa Classic SS 4000 Manuals

try replacing the coil with a straight 12 volt coil and not a resistance coil as the missing could be from a overheated coil
if the coil is at fault then when the engine starts to miss then then coil would be hot to the touch

Sounds like you lost your belt. Or your alternator went bad. The clicking you hear is from the starter due to little power it can't start. The check engine lght might be wired to the battery light so check the belt if it's still there you will probably need a alternator and a battery charge. Also if you lost your belt your car might have overheated also.

Hi,
No...most of the time it is the jack in the back of the machine where the adapter plugs in that goes bad... the problem is usually not the adapter but the plug in....

heatman101

Sometimes you can use digital multimeter to check for ignition mis-fire.
With engine idling, touch spark plug wires, where applicable, one at a time and note the reading. You don't take the spark plug wire loose and you don't penetrate the insulation, just touch it. Some of the readings I've seen around .6 or .7 volts, not even a full volt. If you find one or two that are bouncing off zero, then you backtrack those. It's an inductive reading or whatever you want to call it.
Hopefully the misfire code will tell you which cylinder, then you check fuel--spark--compression on that cylinder. If p0300 mis-fire code, multiple cylinder misfires and the system can't determine which cylinder.
You might have a vacuum leak?
The basic for a rough idle, you check for a leak of some kind, fuel--egr--vacuum.

Dear Sir/Madam...
You just follow these steps:

1.Remove the battery and Adaptor
2.Press and Hold the On buttun for 30 seconds (without battery/adaptor,this is for reset the BIOS in your Laptop)
3.Now you just connect the adaptor with your laptop
4.On the adaptor socket main switch in main board
5.Watch the Laptop charging Light is ok or not.Also watch the Light in Adaptor is lighting normally or not.if all are normal then try 6th step otherwise problem in your Laptop.Just go for an authorised service center.

6.Try to ON the Laptop

All the Best....
thank you very much By Ganesh(INDIA)

6.

all are 12V

You might not have spark as the 12 volts needs a ballast resistor or the points burn out preytty quick. 8 volts at the coil in run with the points open and 0 with the points clsed and battery voltage at the coil when cranking. coil wire near the intake manifold while cranking should jump at least 2 inches. Closed points should be 0 volts at the neg on the coil. pos and neg should be the same 12 volts with the points open. if not either the coil or the points are bad. The condenser can fail and no spark with all the rest right

Get a 2 amp charger and charge the battery fo 3 hours or so. While the battery is charging,check the fuses and check the wiring harness connections between the flywheel and the battery.

Start the bike and rev it up. Use a DC voltmeter to check the battery voltage while running. The voltmeter should read 14+ volts. If not then there may be a problem with the stator.

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yes you did! you overstressed the components of the radio plugging a 6V instead of a 3V adapter!