I call a technician who said he could fix it... and he did it.
He change the L501 component on P500 board. Thanks god i have spare parts from other marantz.... technician did many other "magic" tricks on FM, but changing L501 the volumen on FM was increased to normal listeninig levels.......
More question about marantz.... now i am on a 2440 unit, calibratintg vumeters left frotn channel is not working. Where could i star to check? amplifier? preamplifier?
power supply is working fine, 35v tested, H802 (2sd315) is hot when unit is working....
ideas?
(unit has installed 2sc1445 and nte175 on aplifier board....)