Marantz ST-4000

[vagos_89]

Hello all and sorry for my english. I would like a little help with my Marantz ST-4000 tuner. The tuner waw working normally and suddenly went off. When it is pluged the standby led is on as always but if i try to turn the tuner up the monitor doesn't show anything. I have not sound on speakers too. I opened and tested four transistors on power supply, all diodes and zeners and are all ok. I tested and resistors too and nothing goes wrong. I dont replaced electrolytic capacitors because they seemed good but i dont measured them for ESR and capacitance. In the power supply out connector i have 6 pins and i have those voltages:
POWER: 3,75V
GND: -
remote control: -
FL2: -25,9v
Vfip: -32V
FL1: -25,8V

Are those voltages ok or is there pissible to have bad power supply? Any idea what to ckeck? Thanks in advance!

[budm]

Re: Marantz ST-4000

Those Voltages you show are for the Fluorescent display.
How about the the Regulated 12V Voltages? You have two of them per service manual 3. BLOCK DIAGRAM.
See page 5 and 6 for the actual circuits.

[vagos_89]

Re: Marantz ST-4000

thank you for you reply! yes i tested these 12V voltages and was ok. I found the problem. I decide to test the power push button after all measurements, and YES i had faulty power push button. Than you for you interest again!