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Search: Posts Made By: Nicko6113
Forum: Capture, Record, Transfer 03-05-2022, 05:00 PM
Replies: 7
Views: 292
Posted By Nicko6113
I was using an oscilloscope. All other pins had a...

I was using an oscilloscope. All other pins had a high frequency waveform except pins 10 and 11 just a flat -10-12 volts
Forum: Capture, Record, Transfer 03-05-2022, 11:29 AM
Replies: 7
Views: 292
Posted By Nicko6113
I'm starting to think the transformer may be bad?...

I'm starting to think the transformer may be bad? the dc+ and dc- end up coming from pins 10 and 11 off the transformer.

at this point i have -12v on both pins.

the rest of the power supply...
Forum: Video Hardware Repair 03-02-2022, 07:33 PM
Replies: 3
Views: 284
Posted By Nicko6113
well darn. i had a bad connection from c814 to...

well darn. i had a bad connection from c814 to pin 1 on the ic801. and ill be! it works!

Thanks alot you gave me direction!
Forum: Video Hardware Repair 03-02-2022, 05:48 PM
Replies: 3
Views: 284
Posted By Nicko6113
i just did this to my evo-9850 except i replaced...

i just did this to my evo-9850 except i replaced almost all of the caps on the sst-2 board but the head wont start or spin right with c810 c811 c812 installed if i remove them and give the head a bit...
Forum: Capture, Record, Transfer 03-02-2022, 04:58 PM
Replies: 7
Views: 292
Posted By Nicko6113
i checked my voltages and all the regulators are...

i checked my voltages and all the regulators are outputting there voltage as long as the fan is running. the power supply seems to shutdown after a few seconds. my -29 is only -21 and at the display...
Forum: Capture, Record, Transfer 03-02-2022, 08:06 AM
Replies: 7
Views: 292
Posted By Nicko6113
ill check them. I suppose the output pin should...

ill check them. I suppose the output pin should be its listed voltage.

im not seeing a regulator listed on the DC+ pin on the schematic so I'm a bit confused how that voltage is being generated.
...
Forum: Capture, Record, Transfer 03-01-2022, 09:05 PM
Replies: 7
Views: 292
Posted By Nicko6113
JVC HM-DH30000U power issues?

hello I recently purchased a JVC DVHS and I'm having issues with the power supply.
when I got it I plugged it in and the fan spun really slowly and then would shut down. no other signs of life. I...
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