UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Roberts RT7

Station X · 30th Apr 2009, 6:59 pm

On that basis it appears that R26 is 2530 ohms and R27 is 80 ohms. If you retest R27 on the 200 ohm range this should confirm this. Both resistors are off value. R26 will probably be OK, but R27 should be replaced with the nearest available value which is 47 ohms.

C32 appears to be OK. If you test it battery positive to capacitor positive, capacitor negative to meter positive, meter negative to battery negative, meter on 20mA range you should see a high cuurent flow initially which will drop to near zero if the capacitor is OK.

30th Apr 2009, 6:59 pm	#94
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Roberts RT7 - problem On that basis it appears that R26 is 2530 ohms and R27 is 80 ohms. If you retest R27 on the 200 ohm range this should confirm this. Both resistors are off value. R26 will probably be OK, but R27 should be replaced with the nearest available value which is 47 ohms. C32 appears to be OK. If you test it battery positive to capacitor positive, capacitor negative to meter positive, meter negative to battery negative, meter on 20mA range you should see a high cuurent flow initially which will drop to near zero if the capacitor is OK. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.