Kenwood XD-551 Protection Fault: Troubleshooting & Solutions for CD and Tape Recorder Issues

I have a nil fault. The tower has been interrupted for some time by the CD, I am sure that the lens was dirty, disassembled, cleaned, and folded, but after folding I heard a strange message on the PROTECTION display and se blinks. After the inclusion, he believes, skipping the heads in the pockets of the tape recorder, three times, strangely the optics in the CD, and the vaginas are moving off and displaying this message. Who knows where to look for a fault or error.

I think that there will be some connection with the power level or its cooling ... check whether the fan is rotating or if all the power tip out is soldered correctly (possibly other connectors)

I was showing PROTECTION when I listened loudly to the tower. Check the final power stage really. Maybe you burned the tip and have a short circuit at the output

In the rear wall, all the screws have to be screwed in because the plate of the screws attached to it closes. It can be seen that some plastic elements have metal caps, and these should be in good contact with the metal back wall. If there is no closed circuit, it is just a PROTECTION message on the display and the tower stops responding. So check to see if everything is tight and it must work, since it was OK before.
greetings

In the rear wall, all the screws have to be screwed in because the plate of the screws attached to it closes. It can be seen that some plastic elements have metal caps, and these should be in good contact with the metal back wall. If there is no closed circuit, it is just a PROTECTION message on the display and the tower stops responding. So check to see if everything is tight and it must work, since it was OK before.
greetings

Once again, thank you all for answering Frank0z he was 100% right, smig like wild boar, Weirdly invented it but the stone fell from my heart