I cant find the AUX input in my JVC HX-Z1 Compact Stereo System

Type: auto reverse, double compact cassette deck

Track System: 4-track, 2-channel stereo

Tape Speed: 4.8 cm/s

Heads: 1 x record/playback, 1 x playback, 1 x erase

Motor: 1 x capstan, 1 x reel, 1 x mechanism

Tape Type: type I, CrO2, Metal

Noise Reduction: B, C

Headroom Extension: HX Pro

Frequency Response: 20Hz to 17kHz (Metal tape)

Signal to Noise Ratio: 73dB (dolby C)

Wow and Flutter: 0.08%

Total Harmonic Distortion: 0.8%

Input: 80mV (line)

Output: 300V (line)

Dimensions: 435 x 133 x 328mm

Weight: 4.9kg

Please try another good disc on your player. If nothing change , get your lens cleaned by cd lens cleaner. Repeat cleaning 2-3 times and retry it back. If still problem , please replace your lens with new one.
Regards, Jay

i have tired all of them so now what can i do

Hello
this could be a power fault, but first check the power plug if it is in contact with the power socket and if it is then you have to open the back cover of the system to check the fuses if blown resistor,capacitor and transistor with the use of a multimeter to check for back component and if bad replace faulty ones.
Then power on to confirm, if not on then take it to the manufacturer or a skilled personnel to handle it

the unit may be damp inside.there is dew protection on most new units.It sometimes happens when units are used in the basement.unplug it and plug it back in again and see what happens

You can't. The main amplifier module will probably have a channel blown. The unit is detecting this and tripping into protect mode to stop further damage occurring. Needs to go to a repair place. sorry. ps If you get sound briefly before it trips off then it may just be a speaker wire shorting out! worth checking

if you have old speakers laying around the house try to see what happens, if you connected the good speaker and still has no sound then the internal amp maybe is bad. Make sure it is not muted also.LOL

JVC HXD7 AUDIO SYSTEM, PROTECT CODE COMES ON

That could meen that something is improperly connected. You should try to disconnect everything, and then reconnect it step by step.