All ok ? Trannies specs,Bias, Power tubes specs

[espinete]

Yes, it does. Ss also works

[espinete]

[espinete]

Your plate voltages on atleast two of your preamp tubes are way too high, but with that being said no one here on this board can help you any further without a schematic of the amp from the tech that built it , or some really really good internal pictures of the amp broken down into atleast 4 sections!

I'm gonna ask him

Previous posts from you note that your amp has a rectifier switch, giving solid state or GZ34 HT mode options; which mode was your amp in when the above measurements were made?

GZ34 Mode

Also, as per my repeated queries on your various TGP threads regarding this amp, what is the intended and actual, measured mains Vac, and the actual, measured heater voltage (eg 6.3Vac), from your power transformer?

sorry, i don't know how to do that. I'm gonna try to find that info

And which HT wires are used from..

Last pic i uploaded. Is it enough with that ?

[espinete]

6L6GC don't fix anything. But i can tame the issue by rolling treble knob down

[pdf64]

1 Are the wires from the PT going to the GZ34 terminals 3 and 5 actually red/orange (rather than plain red)?

2 The Vac from the PT to the heater circuit might be measured at the green wires connected to the front panel pilot lamp terminals.

3 Is there a note on the back of the amp advising what the mains wall outlet voltage supply it should be connected to, eg 220Vac, 230Vac etc?
Or a supply rating plate, eg 230Vac 2 Amps 460 watts or VA? All mains powered equipment should have that info permanently affixed, along with the intended mains fuse rating, eg T1A.

[Stevem]

How far are you rolling the treble knob down?
The Fender type passive tone controls command a big signal loss when there turned down as much as it seems you have to do so there's somthing going on in the preamp section also!

[espinete]

How far are you rolling the treble knob down?
The Fender type passive tone controls command a big signal loss when there turned down as much as it seems you have to do so there's somthing going on in the preamp section also!

Bass 2 Mid 8 Treble 0

[espinete]

1 Are the wires from the PT going to the GZ34 terminals 3 and 5 actually red/orange (rather than plain red)?

Pin 3 red plastic
Pin 5 red with a small orange line i didn't see last night

[sluckey]

Bass 2 Mid 8 Treble 0

Those are unusual settings. I suspect something is not wired correctly or wrong value pots. Do you use these settings for both Normal and Vibrato channels?

[espinete]

2 The Vac from the PT to the heater circuit might be measured at the green wires connected to the front panel pilot lamp terminals.

2.7v each green wire

[espinete]

Bass 2 Mid 8 Treble 0

Those are unusual settings. I suspect something is not wired correctly or wrong value pots. Do you use these settings for both Normal and Vibrato channels?

I've never played in my life with treble at zero. This is the first time. It's the only way to avoid that ugly crunch when i use pedals. I don't play through the Normal Channel but i checked it out when i first noticed the issue , but it was the same with pedals . Do you want me to try and playing at the Normal Channel with treble pot at 0 ?

[espinete]

3 Is there a note on the back of the amp advising what the mains wall outlet voltage supply it should be connected to, eg 220Vac, 230Vac etc?
Or a supply rating plate, eg 230Vac 2 Amps 460 watts or VA? All mains powered equipment should have that info permanently affixed, along with the intended mains fuse rating, eg T1A.

No. Nothing at all. I even looked at the transformers and power cord. It suposed to be at 230v. Do you want me to measure that in any way ?

[sluckey]

Do you want me to try and playing at the Normal Channel with treble pot at 0 ?

No. I want you to carefully compare your actual tone pots wiring to the schematic and layout. Correct and report any errors you may find. Some hi rez pics that show the pots and tone stack components on the board and the wiring in between the pots and board could be very helpful.

Do you actually like the controls set for Bass 2 Mid 8 Treble 0?

[pdf64]

2 The Vac from the PT to the heater circuit might be measured at the green wires connected to the front panel pilot lamp terminals.

2.7v each green wire

That seems a bit low. Try sharpening your meter lead's probe tips, eg with a fine file, and measure from across the terminals that the green wires connect to. Expecting about 6.3Vac.

1 Are the wires from the PT going to the GZ34 terminals 3 and 5 actually red/orange (rather than plain red)?

Pin 3 red plastic
Pin 5 red with a small orange line i didn't see last night

Are you sure that the red wire to terminal 3 isn't actually red/orange?
It's just that you've already got 2 red wires from your PT going to the rectifier switch.

[espinete]

I did this. I'm gonna leave now but this evening i will have look at layout