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TV's SONY Chassis FE-1. Repair Typs.
Sony TV (FE-1 Chassis) No power (no standby power supply op) IC609 (TOP209) was faulty, also checked C640 (47uF, 25v), D631 (MTZJ-12B), D628 (P6KE200), D629 (UF4005PKG23) and R627 (4.7ohms, 5%, 0.25w) as a precaution (Josh)
Sony TV (FE-1 Chassis) Changes channel or volume adjusts by itself Check S900/1/2 on pcb H1, alternatively this could be due to failure of IC005 (CD4052BCM-FL63) on pcb A (Josh)
Sony TV (FE-1 Chassis) Set shuts down shortly after start up with standby led flashing 2, 4 or 5 times Check / replace chip resistors R543 (47Kohms) and R541, R573 and R575 (all
100Kohms) (Josh)
Failing Sony Tubes, Usual cause is a heater cathode short causing colour flashes or shut down Isolate the heater pins on the tube, and feed with a very well insulated winding around the limb of the flyback transformer. to gain the voltage required needs just over 2 turns on the limb so do 3 and reduce with a resistor (Rob)
FE1 INT COLOR FLASHES ------à CRT FAULT (INT CATHODE/HEATER S/C) FE1 SNOWY PIC & TONE ON SOUND -----à IC001 MICRO FAULTY KV25K5U SNOWY PIC ----à IC001,MICROCONTROLLER CHIP KV25K5U NO REMOTE ------à D011. KV25KSU FRAME IC HOT LINES ON SCREEN ------à REPLACE C506 0.01MFD KV29X5U VOL OSD PERM DISPLAYED & FRONT CONTROLS GIVE WRONG TS -----àLEAKY FRONT CONTROL SWITCHES - CAN BE CLEANED WITH LUCK/CARE KV29X5U INT PIC -------à JOINTS EVERYWHERE
FE1 Buzzing only on sound from tuner - ok on AV Incorrect sound system selected, the cause being memory corruption. To correct the problem, enter test mode to obtain "TT - -" on screen, & type in "24". This will reset sound system back to PAL I. Turn set off & re-tune, & sound should then return to normal.
FE1 Dark pic The ABL circuit is operating incorrectly. Replace R516 (56K) & R517 (10K or 27K depending on CRT)
FE1 Dead except for st/by LED flashing twice oscillator STR & phototransistor 123 & FOP chip STV
FE1 Reverts to st/by at sw on with 2 or 4 flashes from LED 2 flashes indicates an over-current error in line stage, & 4 indicates a frame fault. However, quite often, when 4 flashes occur it can still in fact be an over-current error as well as a frame fault. To prove which is the correct fault, measure pin 52 of the micro (IC001) at switch-on, and if this voltage goes high (anything above 0.6v) then it is in fact over-current. If it stays at 0v then the fault is more than likely within frame stage.
FE1 Snowy pic & tone on sound IC001 micro faulty
FE-1 KV21X5U burst of EHT then shuts down with LED flashing error 2 regulator IC603 SE135N (874992061)
FE-1 KV21X5U pic closing in from sides and going off (poor HT regulation) error amp IC603 SE135N (874992061)
FE1 KV25K5U Dead with LED flashing 4 times Check for 9v at pins 33 & 34 IC301. If present, check R546 47R 1/2w for o/c (135v Line dr supply)
FE1 KV25K5U Trips off with a crack - LED flashes 5x CRT faulty
FE-1 KV25K5U lines across screen, frame IC running hot C506 0.01 uF
FE-1 KV25K5U not starting up, LED flashes 4 times T511 breaking down at switch on, replace T511 (145326411 for 25",
145326511 for 29")
FE-1 KV25X5U comes on then goes off, red LED is on stby IC609 TOP209P u/c
FE-1 KV25X5U yellow line down screen about 2 inches from RHS IC301 CXA2060BS (875208838)
FE1 KV25X5U etc Enters search mode as soon as its switched on replace SS902 preset search switch and clean PCB that it is
mounted in
FE-1 KV29K5U dead, in stby C515 220uF 25V s/c
FE-1 KV29K5U no remote operation D907 BZX79C9V1 leaky on SIRCS line
FE-1 KV29K5U pink band on LHS, only obvious on dark bachground video lead from CN504 on A PCB to CN704 on CRT wrapped around L537 (LINE LIN), tie bottom edge of loom to the hole provided in top right corner of S PCB
FE1 KV29X5U Int pic - sound ok or nothing with LED flashing 4 times Dry joint line dr Trfmr T531 (under plastic cradle)
FE-1 KV29X5U no remote, front buttons are Ok D908 9.1V zener leaky on H board
KV21X5U FE-1 Dead with 2 flashes from led When D512 was unsoldered, LOP stage operated - Q703 (BF420), Q704 (BF421) and Q713 (BF420) all in the red output. Plus D701
(MTZ J 5.6, a 5.6V zener) leaky and D705, 1SS133T unsoldered, LOP stage operated - Q703 (BF420), Q704 (BF421) and Q713 (BF420) all in the red output. Plus D701
(MTZ J 5.6, a 5.6V zener) leaky and D705, 1SS133T (1N4148) O/C. all on crt base
KV25K5U LED flashes twice - LOPTr s/c but still goes s/c at sw on even with LOPTx replaced Q635 line driver & check R546 47R feed res
KV25KSU FRAME IC HOT LINES ON SCREEN REPLACE C506 0.01MFD
KV25X5U Low width, poor e/w correction, high contrast picture going blue after a while. IC606 9v regulator 7809 s/c.
KV29X5L Stuck in standby with two blinks from front LED every few seconds. Replace L.O.P transistor 2SD2539. S/C due to poor soldering of scan caps on collector
KV29X5U FE1 Vol OSD perm displayed & front controls give wrong functs Leaky front control switches - can be cleaned with luck/care