I have denon avc 2530, now it is showing :Protect: which is i cannot remove, may u help me. [email protected]

The manual, and service manuals are here: https://www.vinylengine.com/library/denon/dp-15f.shtml
You need to make a free account to download them.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Search the site by type in the "Brand Name" (Exclude the model number) to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

all i found was The only reset is the front panel. I can mail you my Denon Documentation file. It lists all of the known codes (at least to me) for the AV and stereo receivers and now the mini system.

You do not show an email in your profile, however.
http://ilscustom.com

A lot of decks don't actually do that anyway. But if it previously did this then it's probably a mechanical problem. Removing the bottom of the turntable might show up the cause of the problem.

Go here and find the manual. It shows the belt.

http://usa.denon.com/us/downloads/pages/instructionmanual.aspx

Service Manual Denon DVD 2900

http://safemanuals.com/user-guide-instructions-owner-manual/DENON/AVC-3020-_D

follow that link and then click on the download it's free link.
Thank you,
Lee

Please see the link below for an explanation of Protect mode. Specific to your model, the output transistors are likely to be shorted. This particular model will shutdown the entire unit if any of the channels have a problem. Without actually seeing the unit and taking some internal measurements, I cannot state for sure the parts required for repair. I would expect a parts cost in the $20-$40 range minimum.

Dan

Link: http://www.fixya.com/support/r5390728-protector_means

i do not know about the supply transistor for denon avc-a1se

ive not worked on a denon deck but there will be internal fuses.on techknics you remove the platter then remove the caseing to uncover the board and the fuses will be on there,make sure to use the right ones though as they protect main board gd luck