Need help on how to measure B+ on a Toshiba PD2367 chassis

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Buddyc
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Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by Buddyc »

Howdy!

Just did a recap on a Tosh PD2367 chassis in my NNC and would like to measure B+ as safe as possible.
Got the equipment and experience to measure, but unsure on where to place the probes for the multimeter.
Please school me!
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grantspain
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by grantspain »

all the digital chassis tend to 175-180v and normally read at the picofuse or safety resistor if fitted
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by Buddyc »

Thanks Grant!
So red probe on one of the legs of the pico fuse and black probe anywhere on the chassis mount?
Somebody placed a normal fuse there one time( As you mentioned in my other tread a couple of days ago). Would this be a issue when measuring?
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grantspain
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by grantspain »

yes red probe to fuse and black probe to metal frame, pretty sure it will be about 180vdc
the picofuse is a very quick blow type fuse, as long as they put same speed fuse and amp rating in then it will be ok
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by Buddyc »

Thanks again! Will give it a shot!
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by Buddyc »

Ps. 180VDC on 31khz, but probably lower for 15khz?
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by grantspain »

no i would expect it to be the same on digital chassis for all resolutions as they normally power the video b+ from chassis b+ and that must remain stable
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Re: Need help on how to measure B+ on a Toshiba PD2367 chassis

Post by Buddyc »

Great info as always. Much appreciated!
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