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 Post subject: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Tue 06, 2015 4:08 am 
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Joined: Jul Sun 12, 2015 4:00 pm
Posts: 134
Location: Monrovia, CA
Hi everyone! I recently acquired a Superior Instruments TV-11 last weekend. The wood on the case is slightly splintering and the lid is falling apart but the panel looks spotless. I haven't plugged it in due to the insulation flaking off the chord. I opened it up and I only found one capacitor that was across the meter. Presumably it is for low voltage. I was wondering if I should be concerned about it and get a replacement or if it is fine and I can hold off on a replacement. I am also not 100% sure how to operate so any operating instructions are welcome. Thanks again!

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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Tue 06, 2015 5:02 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 11360
Location: North of Mpls, Minnesota
You can find the manual here.
http://bama.edebris.com/manuals/superior/tv11/

There are two capacitors .01 and .5 both of these need to be replaced. There should not be a capacitor across the meter. All the resistors should be checked and replaced as most of them will have drifted high.

Dave


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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Wed 07, 2015 1:48 am 
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Joined: Jul Sun 12, 2015 4:00 pm
Posts: 134
Location: Monrovia, CA
easyrider8 wrote:
You can find the manual here.
http://bama.edebris.com/manuals/superior/tv11/

There are two capacitors .01 and .5 both of these need to be replaced. There should not be a capacitor across the meter. All the resistors should be checked and replaced as most of them will have drifted high.

Dave


Thanks! What voltage are those capacitors rated for? I might have replacements on hand.

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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Wed 07, 2015 2:25 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 11360
Location: North of Mpls, Minnesota
250 volt or higher caps will be fine.

Dave


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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Wed 07, 2015 4:24 am 
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Joined: Jul Sun 12, 2015 4:00 pm
Posts: 134
Location: Monrovia, CA
easyrider8 wrote:
250 volt or higher caps will be fine.

Dave

Thanks! I don't think I have capacitors that will take the voltage.

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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Fri 09, 2015 3:14 am 
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Joined: Jul Sun 12, 2015 4:00 pm
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Location: Monrovia, CA
I have been looking through my capacitor pile and I found a 103k ceramic disk capacitor. It has a value of 0.01 MFD but I don't know the tolerance. Does anyone know if this will work? Also, what type of ceramic disk capacitor will replace the 0.5 MFD capacitor?

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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Fri 09, 2015 6:54 pm 
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Location: Pocasset, Cape Cod, MA
"k" is +/-10% tolerance.


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 Post subject: Re: Superior Instruments TV-11 Tube Tester Restoration.
PostPosted: Oct Sun 11, 2015 5:30 pm 
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Joined: Jul Sun 12, 2015 4:00 pm
Posts: 134
Location: Monrovia, CA
I replaced both capacitors and the power chord! I found that the 40 kilo ohm resistor needs to be replaced. Does anyone know what wattage the original was rated for?

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