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LA502 Optical Compressor / Re: Hi! i just completed my 502 and everything seems to be working(powers on

« on: March 29, 2021, 09:53:59 PM »

i reflowed the solder joints on the output transformer, i read a resistance of 4.6 to 5 ohms 

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LA502 Optical Compressor / Re: Hi! i just completed my 502 and everything seems to be working(powers on

« on: March 27, 2021, 06:55:40 PM »

I may have discovered an issue. I wasn't getting any voltage across r17 and i checked the resistor and it is supposed to be the 1k .5W but i am only measuring a 22 ohm resistance across R17. The resistor is labelled as a 1k though. is it faulty?

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LA502 Optical Compressor / Re: Hi! i just completed my 502 and everything seems to be working(powers on

« on: March 26, 2021, 07:05:59 PM »

Yes i get 10V+

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LA502 Optical Compressor / Re: Hi! i just completed my 502 and everything seems to be working(powers on

« on: March 25, 2021, 11:02:53 PM »

Hi! I measured 1VAC on the output while testing. R6 and 7 are both the correct value.

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LA502 Optical Compressor / Hi! i just completed my 502 and everything seems to be working(powers on

« on: March 23, 2021, 07:33:52 PM »

Hi! i just completed my 502 and everything seems to be working(powers on, passes signal, compresses etc). When i went to set up the unit, i could not read 26V gain at 100% gain and could only muster 12.8 V between pins 2 and 3. I tested the points listed here in the original forum post and all the readings were correct. My suspicion is there is a faulty chip or something is up with my dmm or 500 rack ( Cranborne 500r8 ). What do you think the issue is? Thanks!