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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 917
SonyBE1Dead HT 110v present at test pointNo B+ volts at loptr - PS01 N15 600mA cct prot o/c14-09-04
SonyBE1DEAD NO HT BU506 SCCHECK R606 68R OR REPLACEMENTS14-09-04

SonyBE1DEAD ONLY 25v ON D604 ( 119v IS COECT )C608 680pF LEAKY CONNECTS ACROSS D60414-09-04
SonyBE1Dead.BU506 , D611 , R606 ( 68R )14-09-04
SonyBE1E/W & Width problemsC808 47nf 250v14-09-04
SonyBE1Field collapseCheck R801 ( 0.47R ) & PS501 if both o/c IC501 ( uPC1488 ) u/s if ok check for D/J around ic14-09-04
SonyBE1Field collapseReplace fop chip with a µPC1488H (orig LA7830) & check cct prot14-09-04
SonyBE1Field collapseIC501 µPC1488H faulty - supply from LOPTx high - dry joint on loptx esp pin 11 (chassis)14-09-04
SonyBE1Hooking at top of pic with buzzing from lop stageline dr pulse at pin 8 of TDA2579A IC551 affected when fault present - chip faulty14-09-04
SonyBE1Int goes to lines / loss of soundDry joints T01 & T02 in IF can14-09-04
SonyBE1Int loss of syncNo vid from txt pcb to sync sep pin 5 IC551. 12v supply on txt pcb only 5v due to Q02 o/p (sm) 2SC2873-Y faulty14-09-04
SonyBE1Iont sound & vis - goes black with linesDry joints in VIF can14-09-04
SonyBE1Lack of width & E/W distL804 2.7mH o/c - couples E/W drive to diode mod14-09-04
SonyBE1LINES OF RED , BLUE , GREEN AT TOP OF SCREENIC501 ( FIELD OUTPUT DRY ) u/s R801 ( 1K )14-09-04
SonyBE1LOW WIDTHL804 O.C.14-09-04
SonyBE1No sync - sometimes intermittentrepair print to collector of Q02 on txt pcb14-09-04
SonyBE1No sync when coldIC02 SAA5231-V6 vid proc chip faulty14-09-04
SonyBE1pic washed out & flaringR852 overheating (1K0) & D852 leaky14-09-04
SonyBE1Picture blanks out leaving OSD or pic breaks upDJ on T01 in if can14-09-04
SonyBE1Replacing STR54041Use Sankey version - has "SK" in small circle at bottom14-09-04
SonyBE1SET WON'T TUNE IN BUT OSD MOVES COECTLYIF 33v ON IC004 OK Check Q004 & D156 SC14-09-04
SonyBE1SOUND STUCK AT ZERO OSD MOVESPIN 7 IC201 TDA1013 AT 6v D201 SC14-09-04

SonyBE1SOUND WONT ADJUST , OSD OPERATING NORMALLYD201 1SS133 ( ON AF MUTE LINE )14-09-04
SonyBE1St/by onlyMicro type M50436-618SP - micro volts were incorrect & no activity14-09-04
SonyBE1Various tuning faultsdry joints in if strip & C012 0µ01 s/c14-09-04
SonyBE1WHITE FLASHES ON PICTUREQ301 NOISY JC501Q14-09-04
SonyBE1Won't stop/lock when search tuningSync gen Tr Q07114-09-04
SonyBE1 KVM19TUBlank raster turning into line collapseTDA2579A jungle chip was heat sensitive14-09-04
SonyBE1 KVM2131Repeatedly blows LOPTrdry joints line osc IC551 TDA2579A and possibly C808. Other possibilities dry joints on line driver tx, LOPTx & STR giving an int high o/p14-09-04
SonyBE2deadIC601 STR54041s/c, Q601 limiter BC637-16 s/c - when replacing make sure its fitted correctly! Check for dry joints esp mains bridge14-09-04
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