cr-820 relay switch or power supply problem

se7en8n9ne

Active Member
Sometimes the safety relay switches on with one of my two 820's and was wondering what exactly to order from mouser to recap c816 and possibly c813 to c815.
what am i looking for at TR805 to TR809?
thanks
 
Sometimes the safety relay switches on with one of my two 820's and was wondering what exactly to order from mouser to recap c816 and possibly c813 to c815.
what am i looking for at TR805 to TR809?
thanks

what am i looking for at TR805 to TR809?

As in voltages or replacement parts?
 
Yes sorry for the tr805 to tr809 I would also like voltages.
If you wouldn't mind helping that'd be awesome.
 
Yes sorry for the tr805 to tr809 I would also like voltages.
If you wouldn't mind helping that'd be awesome.

Voltages taken directly off a working reciever.
TR805
E.. 12.95 vdc
C.. 12.99 vdc
B.. 12.42 vdc

TR809
E.. 11.67 vdc
C.. 21.15 vdc
B.. 12.35 vdc
 
tr 805 is causing the relay to switch and reading zero. well c was .08 but the other two were 0's

tr 809 was doing the same thing with the results; a .05 b .06 c .08.
 
tr 805 is causing the relay to switch and reading zero. well c was .08 but the other two were 0's

tr 809 was doing the same thing with the results; a .05 b .06 c .08.

Regroup -- Lets back up some here. These voltages your getting. Are they referenced to chassis ground ? Cause your readings are totally out in left field somewhere.
 
I took readings today and got 0s across the board. So what's next? Do I take more readings or start replacing parts? I wish I knew how to read the schematic. Is there a noobs guide to electronics book or guide out there?
 
if you are getting 0v everywhere your meter is broken /or you are making a mistake /or power supply is bad /or unit isn't switched on .
maybe a bad fuse ....
 
Well it's for sure on.
I have the black to chassis, the fuses all look good to me. How do I check power supply?
 
Are any of the red LED's illuminated?




Cathode end of D805 should be 18-20 volts DC. Anode end should be about 18 volts AC.
 
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Well it's for sure on.
I have the black to chassis, the fuses all look good to me. How do I check power supply?

Fuses may look good even if they are bad. Check'm with your meter! F801 and F802 !
 
Cathode end of D805 should be 18-20 volts DC. Anode end should be about 18 volts AC.

See if you can locate D805 and check the voltages at both ends.
 
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