[TenTec] CORSAIR II TROUBLESHOOTING

[ARDUJENSKI at aol.com]

I HAVE LIMITED TECHNICAL ABILITIES. i WOULD APPRECIATE ASSISTANCE  
TROUBLESHOOTING CORSAIR II.  HERE IS A PICTURE OF WHAT IS LCCURING:
 
---IN THE PAST 3 MONTHS THE CORSAIR II WOULDMAKE A POPPONG SOUND IN THE  
SPEAKER WHEN TURNING THE RADIO ON/OFF
 
---SITUATION NOW  THE METER LAMP DIMS SIGNIFICANTLY WHEN THE PTT IS  USED 
AND THE METER NEEDLE DROPS TO ZERO.  ALSO IF THE FREQUENCY IS SET  14.300 AND 
PTT ISSUED THE READOUT CHANGES  TO 96.303 AND I-C READING IS  ZERO.  THERE 
IS A SLLIGHT DISTORTED "HOLLOW-SOUND WHEN SCANNING ON  RECEIVE..
 
I AM LOST AS HOW TO APPROACH TROUBLESHOOTING
 
I HAVE CHECKED INSIDE THE RADIO FOR SIGNS OF DISCOLORED PARTS, LOOSE  
CONNECTIONS
 
I REVIEWED THE "LIST" FOR SIMILAR ISSUES WITH NO LUCK 
 
ALAN KB7MBI
425.788.3612
 
NOTE THE POWER SUPPLY IS TT 260