Help me get my voltages up to what they should be....

Double-Bubble! Place for discussing the 36W version...

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Chubsman
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Help me get my voltages up to what they should be....

Post by Chubsman »

Here are my voltages, as you can see they are low across the board... In ((BRAKETS)) are what they should be....
How can I get them up to what they should be??? Lower CAP Can resistor??

Tubes
V1 –
PIN1-122V (170V)
PIN 3-1.5V (1.2v)
PIN6-141V (173v)
PIN8-1.3V (1.2V)

V2 –
PIN1 – 126V (152V)
PIN3 – 1.3V (1.3V)
PIN6 – 225V (258V)
PIN7 – 118V (152V)
PIN8- 119V (152V)

V3 –
PIN1- 178V (206V)
PIN2- 44V (43V)
PIN3- 62V (65.8)
PIN6- 177V (206)
PIN7- 45V (45)
PIN8- 62V (65.8)

V4 V5 V6 V7 V8
Pin3- 10.3V (11.6)
Pin7- 329 (332)
Pin9- 281 (322)
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Plexi
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Post by Plexi »

I would do a little detective works.. since the screens look low.. read the voltage at the tube connections of the screen..you have 281v make sure your screen resistors are the correct value..

Also.. what is the voltage reading at the connection of the PI plate supply.. if it is 281 also..then you could have the wire one turret off from the cap can section or something miswired there or reversed off the 8.2k supply..
Have you also tried swapping some tubes.. a tube can also mess up the voltages. I would first check those things..

Richie
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allynmey
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Post by allynmey »

What is the voltage coming off your PT secondaries? Also the voltage coming off your rectifier? Check you mains voltage too. Seems if the voltage is low across the board it may be in the tranny or recto. Of course, with out the sec. voltage and recto voltage we can't be sure. Measure those and post it here.:D

Allynmey
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Chubsman
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Post by Chubsman »

I am getting 121 Volts from the wall
I have 3 Volts of the Greens (heaters)

At the rectifier i am getting:
330 Volts off the Yellows
286 volts off the Reds
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Dynaflow_Donnie
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Post by Dynaflow_Donnie »

Maybe you answered this already, but which transformer. 3v seems pretty low on the heater.

Regards,

Dyna
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Chubsman
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Post by Chubsman »

SORRY my bad...., I have 3 volts when going to 1 of the heater wires referenced to ground..., but when I take the voltage from both heater wires at once I get 6.1 volts....

I just went out and bought a new JJ rectumfier (to replace the Copper cap I had in there. (((Please refrain from any "Weber questions should be directed to his forum""))). Cause this has nothing to do with this.

Here are the new volates with a new rectifier (Gz34 JJ/Tesla) and I changed the 1K5 cap can resistor for a 1K.

Here is how it is layed out
TUBE/ PIN: Voltages they were - What they are now and ...in ((Brackets)) is what they should be.

Tubes
V1 – Where - Now - Should be
PIN1 122 -- 125V -- (170V)
PIN3 1.3 -- 1.0V -- (1.2v)
PIN6- 141V -- 144 -- (173v)
PIN8 1.3V -- 1.3 -- (1.2V)

V2 –
PIN1 126V -- 122 -- (152V)
PIN3 1.3V -- 1.3 --(1.3V)
PIN6 225V -- 232 -- (258V)
PIN7 118V -- 123 -- (152V)
PIN8 119V -- 124 -- (152V)

V3 –
PIN1 178V -- 183 -- (206V)
PIN2 44V -- 44 -- (43V)
PIN3 62V -- 62 -- (65)
PIN6 177V -- 183 -- (206)
PIN7 45V -- 46 -- (45)
PIN8 62V -- 62 -- (65)

V4 V5 V6 V7 V8
Pin3- 10.3V -- 11V -- (11.6)
Pin7- 329 -- 327 -- (332)
Pin9- 281 -- 281 -- (322)
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