samsung Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
SamsungCI6230
DeadC416 2µ2 250v blasted - check D814 s/c RU4AM - BYW95c does
SamsungCI6229T P72
No pic unless A1 advanced - looks like failing mono tubeC416 2µ2 250v HT decoupler
SAMSUNGCI6229T
INT DEAD OR DOES NOT SWITCH ON FROM COLDREPLACE C806 100MFD25V
SamsungCI6229T
Field collapse - repeat failure of FOP chipMod by removing link PJ28 and in it's place fit a 10uH choke. Also add a 470nF 100v capacitor from pin 5 of ic301 to earth. PJ28 is the 26volt supply to the field ic and this rail suffer's from spike's.!
SamsungCI6229 U88MT1
PARTIAL OR COMPLETE FIELD COLLAPSE , REPLACE IC301ADD 1N4148 FROM PIN 9 IC301 TO PIN 3 IC 301 ANODE TO PIN 3 ADD 1N4148 FROM PIN 3 IC301 , ANODE TO GROUND ADD 12pf CERAMIC FR
SamsungCI5955N
Field collapseReplaced TDA8350Q & R412 0R27
SamsungCI5944 SCT12B
Field & E/W problemsIC301 fails - SEME supply kit RK12
SamsungCI5944 etc
Field collapse - partial or totalTDA8350Q IC301 - Replace IC301 (version 6 supplied with kit) Check R307,R409,& R412 Fit the following additional protection components: ADD: Diode type MA2560 from V1 to ground. (VI is the scan coil connection) ADD 470nf capacitor in parallel with this diode. ADD 1R2 0.5 w resistor in series with L301. Change L301 to 10uH. ADD 1N4004/7 diode, anode to pin 9 of IC, cathode to R307, (Supply side, not IC side pin 8) ADD Diode type MTZ15C cathode to pin 3 anode to ground.(Across C303)
SamsungCI5944
Field problemsMod kit available from CHS (MODKIT10) incs mod sheet
SamsungCI593CN3X S51A
Service mode accessPress St/by, display, menu, mute & power on in sequence, then go to st/by to leave serv mode
SamsungCI593CN3X S51A
No sound/pic - snowy pic/sound available thro' scart o/pIC902 24W16 EEPROM faulty. Samsung's replacement 24C16 is set on CK tuning system & needs resetting to CI (UK version) Enter serv mode/reset mode to do this or no sound will be present
SamsungCI593CN SCT12B
Stuck in standby, 5V supply to Micro IC901 pin 34 is lowReplace Micro Z8933212PSC-R3593 , part number AA13-30018K ( 30UKP+VAT )
SamsungCI593CN SCT12B
No pic - sound okReplace IC201 TDA8375/N3
SamsungCI593CN S51A
Dead with LED lit green - no line driveC407 1nF 2kv leaky (next to LOPTr heatsink)
SamsungCI593CN S51A
Dead C807 2n2 800v burnt, IC801 pt no 1203-001482 faulty
SamsungCI593CN
Various inc vol varies, chan counts up/downFront controls varying in resistance
SamsungCI5937AN Z68
Pic slow to appear with lack of width & jagged vertsAlso arcing noise from LOPTx - HT smoother C828 470µ 250v faulty
SamsungCI5937AN
St/by onlyMicro not giving power on signal. Front panel faulty (works by R/C when dis'd) - NLA
SamsungCI5937AN
SET WHINES NO PICTURE OR SOUNDD808 170v OVERVOLTS ZENER SC PC801 OPTOCOUPLER DRY JOINTED
SamsungCI5937AN
Dead except for squeal from psuAll sec supplies low - 32v line has a low res reading - audio o/p chip TDA2161 s/c at supply pin 7