If you need a probe to measure the HOT wires i have a 30kv probe you can have for shipping.
nosaj

Here is the second one.
nosaj

Here is the first one.
nosaj

I tried to post earlier. Do you want a working variac? If so PM for details.
nosaj

Quick tip  right click on the folder an choose download. It will zip them up as one package and download. I snagged them all in under 5 minutes.
nosaj

Great find BTW

Any chance you'd be interested in a heathkit et-100(provided your CONUS)? $20 plus shipping
nosaj

Well dang.  i hooked up  to c138 to measure the range of voltage from q101 and what do you know compression led lit up. So i had a cold joint .
Looks to working just fine now. Set the compression circuit and and now works as it should.

Hi's a Fives to everyone.
Thanks,
nosaj

Quote from: saturated on August 25, 2023, 05:41:43 PM

Quote from: nosaj on August 25, 2023, 02:17:54 PMWhat bookare you using?
Nosaj

hello this is the book but i imagine one could locate lots of circuit diagrams everywhere


and it gets deep quick

You cannot view this attachment.

ok i guess the above schematic doesnt scare most people here but it does me

 

Ha what scares me is when numbers and letters are together.
nosaj

What bookare you using?
Nosaj

Quote from: Jazz P Bass on August 16, 2023, 11:43:22 AMAre you getting a signal through A112 pin 7 & 1?

Yes i am getting signal on pins 1 and 7.

nosaj

Quote from: Jazz P Bass on August 16, 2023, 11:43:22 AMAre you getting a signal through A112 pin 7 & 1?

Sorry for the delay guys.  I will pull out the scope tomorrow and check signal.

I followed these procedures for setting compression and nada nothing.
Dummy load
all tone set flat
master CW
Compressor off
Dial up till output reaches 28.3 VRMS with 1khz sine 100mv into low jack
Turn compressor on set to zero adjust r186 till led starts to fire.

thats the instructions from the lab series notes.
Will check on signal tomorrow and flush slide switch and pots.

Thanks guys

nosaj

How can I make notifications pop my email when theres a response?

i have a Lab5 that seems to be having a issue with the compressor not engaging. The way I understand it compressor rolled all the way to the left at -18 should be the most sensitive but it doesn't seem to matter any position of the compressor knob. it just doesn't work. Any help I can get would be greatly appreciated.
When powering on sometimes it will light for a sec then go off so the LED is good.
Thanks,
nosaj

Was there DC at the speaker?  If so  lightly take our hand and push the speaker in, it should move smoothly, if it is stiff you may require a new speaker also.  I just had a Kustom powered subwoofer with that chip last nite that died taking out the speaker with it .
nosaj

Service Manual attached
nosaj

i would also check out these guys
https://wgsusa.com/

nosaj