samsung Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
SamsungCI6837AN
White dots across screen & no sound5 & 12v supplies low due to dry joint 15v link wire to regs
SamsungCI6837AN
SET WHINES NO PICTURE OR SOUNDIC603 TDA2616 SC INT.
SamsungCI6837AN
Dead - whistles even in st/byIC603 TDA2616 audio o/p chip internal s/c under load
SamsungCI633CN
Sound but no picPic appeared when A1 advanced - new LOPTx reqd
SamsungCI623CN
Field collapseTDA8350Q s/c ; R307 10R 1/2w fusible o/c
SamsungCI6230WN
Won't come out of st/by when coldC806 100µ 25v
SamsungCI6230WN
TrippingC56 2u2 250v , C590 ON TUBE PCB USE 450v TYPES
SamsungCI6230WN
TrippingCHECK C560 2.2mfd 250v CRT BASE , REPLACE C590 AS WELL. ( TO CONFIRM - REMOVE CRT BASE CONNECTOR AT PLUG NEAR LOPT )
SamsungCI6230WN
Pulsing psu & TrippingC560 2µ2 250v on crt base - also check C590 - remove plug by loptx to crt base to check this fault
SamsungCI6230WN
No R/C operationMicro IC701 had developed internal s/c which made prot line go low- PCA84C840/062
SamsungCI6230WN
Field chip has short lifefit a 470n cap from pin 5 of the chip to deck and replace PJ28 with a 10 mH choke, check elect caps, give no guarantee and hope!
SamsungCI6230WN
Dead with squealC416 2µ2 250v in LOP supply
SamsungCI6230 UM88MT-1
Filed collapseWhen replacing TDA3654 fop chip also replace wire link PJ28 (from pin 5 chip) with 10µH inductor pt no 2701-001040 & fit 470nf polyester cap pt no 2305-000407 between pins 4 & 5 TDA3654 as close as poss to chip to prevent reoccurence
SamsungCI6230 U88MT1
This set was dead , with just a highpitched squealC416 ( 2.2 , uF , 250V ) was short-circuit. It decouples the supply to the line output stage.
SamsungCI6230 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
SamsungCI6230 U88MT1
ODD VIDEO - NO COLOURCHECK 12v SUPPLY FROM REG.
SamsungCI6230
St/by onlyC808 & 806 100µ 25v
SamsungCI6230
No sound - ok via scartAudio in at TDA8415 IC601 ok but no o/p - no osc due to 10Mhz Xtal being u/s
SamsungCI6230
Field non lin and short picTDA3654
SamsungCI6230
Dim heaters, non lin field, hum bar on cols - all line derived supplies lowC560 4.7uf @ 250v & C590 2.2uf @250v on crt base