MRA5-L6 in Seeburg 'R' - resistor discrepancy

Steve_B · by **Steve_B** » Sat Jan 23, 2016 6:44 pm

I was verifying resistor values in the amp when I noticed a discrepancy between the schematic and what was installed in the amp. Resistor R21 is listed as 8200 ohms, +/-10%, 2W on the schematic. The amp had a 1/2 W resistor installed which appeared to be original. What was also curious is that this resistor was also cracked. Can someone confirm the correct information for this resistor location.
Thanks, Steve

by **Ron Rich** » Sat Jan 23, 2016 7:07 pm

Hi Steve,
Yep--should outta be, a 2 watter ! When checking this ( or any) amp--be sure you are using the correct schematic issue, for that serial number (or code) ! In this case, all serial numbers use an 8200 ohm, 2 watt, 10% resistor, as R-21. Ron Rich

Steve_B · by **Steve_B** » Sat Jan 23, 2016 8:47 pm

Yes, correct schematic for amp s/n.

Another similar issue as prior post above. Resistor R3, 1000 ohms, +/- 10%, 1W listed in schematic. Amp has 1/2 W installed. Ron, please confirm this one as well. Maybe these were replacements and not original as I assumed.
Thanks, Steve.

by **Ron Rich** » Sat Jan 23, 2016 9:37 pm

Same answer !!
Ron Rich