marantz 140 problem

Hi! I’ve had the same Marantz 140 for my entire life (mom purchased in 1975) and it’s never had issues. Recently, peaking lights started coming on at power up but the amp still played fine. Now peak lights illuminate and VU meters shoot to the right and speakers buzz very loudly. The amp still...

Hello all, long long time ago i was 16 and bought a second hand 3200/140 set for 50 euro's and used it for a while in combination with an pm7000 amp to drive my quadral aurum 9 speakers. but my room on campus was waaaay to small for this setup so i took the pm7000 and a couple of B&O speakers...

Hello everyone, I am Tobi from Germany and had to fix one bad channel of my Marantz 140. The capacitors have been replaced previously by the owner before. So I checked for cold solder joints but could not find any. Then I ordered replacements for all transistors of the amplifier board with the...

Hello. I have a Marantz 140 power amp that I'm looking at for an old friend. Upon power up, it has -3.4 VDC on the speaker terminals. I'm afraid to hook up speakers to it. Both meters are in the middle when powered on. The two peak indicators are lit too. I replaced all caps in the protection...