trinityamps.com

Hi
after rebuilding my plexi on a vox Chinese chassis ( tricky ) I have no sound at all
checked voltage all are correct except pin 2-8 and 7 on V3 6V in place of 60 V
swap tubes and check ground preamp but no way ..
any suggestions ?

thx
jean

Is this our plexi 18 watt? Always check your ground points and power supply points and jumpers.

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Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Yes this is the trinity plexi 2009 model I bought from you

Ground is ok maybe this is TMB volume pot or tone normal chanel pots

I m going to shunt 470K and 470R resistor

Thx for the advice Coco

If the plate voltage (pin 1 & 6) are OK, then the issue has to be a connection. I would suggest the jumper between 470K-470R-470K or the 56K resistor to ground. Check all and the wiring around this carefully.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Ok its working
bad labeling from my resistor supplier , i need to learn color code

Its good practice to measure components to conform their value! Hard to resist putting them straight in tho!!
Glad its working, which reesistor was it?

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

470k And 470R swap

I guess brown and yellow could look similar. Usually it's red and orange that get mixed up.

Yes, it only takes a few seconds to verify that the resistor is right with an ohm meter and it saves a lot of headaches later. Especially with 1/4 watt resistors that use a four-band color code, but those won't show up in tube equipment.

I also check capacitors before installing since my meter can measure those, too.

Good advice.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps