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I found those resistors, they are between main ps capacitors.
Should I change ceramic capacitors to silver mica ones? Maybe tantalum capacitors should be changed as well, as I know, they are prone to failure

DC offset is fine even without VFET, 0-5mV. Do you recommend to set the bias with VFETs inside only? I set the bias equally to 4.5mV on both channels and the drivers are on the same temperature, little hot. If I leave the DC bias as is (it were original setting) and put VFETs in, won't they get dama...

I powered on the amp without VFET installed. Measured DC Bias voltage are 5mv \ 1.8mv on every channel. Should I set DC Bias to 50-60mV without VFET installed or it will raise itself when I put VFET in? Also heatsinks of driver pair (c1663\A835) of left channel are little warm (collector voltage on ...

Do you know where to find 4R7 R127, R227? I can't locate them in the amplifier. Seems like they should be connected from GND to amplifier chassis. Perhaps they were omitted by Sony.

Verder een goede kwaliteit weerstand kiezen voor de tegenkoppel weerstand.[/quote]
Do you mean R213, R113 4.7K?

Anybody noticed a mistakes in service manual on silkscreen and components list (R153, R253)? I think the last should prevail.

Are there a Japanese made output BJT replacements?

De drivers kunnen vervangen door 2sa1220a en 2sc2690a van NEC. Die zijn snel en vak voor 100 w amps gebruikt. Of de ksa1220a / ksc2690a van fairchild. Zal v beide de specs eens nalopen en bestellen. Toch vreemd dat het l kanaal met dikke drivers stuk gaat en r met 0.5 A drivertjes het overleefd. Do...

Sorry, I don't speak Dutch. Yes, I ment fusible resistors. The amplifier should be in operational condition, previous owner told me. I measured vfets on a pcb and they seem to be ok. From 1.6 to 2.5 dcr (minus 0.5R dmm leads resistance) plus diode test. I still didn't power it on, afraid it could be...

In service manual - nr. Kunt u me wat details vertellen over de revisie? Moet ik alle diodes veranderen en weerstanden fuseren? Wat zullen de vervangingen zijn? Moet ik ook alle condensatoren vervangen? Vervanging van condensatoren moet van hetzelfde type zijn? Is er een noodzaak om transistors te v...

Groeten.
Waarom niemand een lijst met onderdelen toont die nodig zijn om deze ta-n7-versterker te reviseren?