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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: 901
HitachiCPT2250 JNo startup.R712.14-09-04
HitachiCPT2282Dead aft degaussing therm blownReplace mains fuse & thermistor (P181 from CHS works) - won't work without this dual role therm14-09-04

HitachiCPT2288DSSt/by onlyNo o/p from sw mode PSU as LL04 coil o/c14-09-04
HitachiCPT2288DSStandby - LED on - dead.LL04 o/c - may be able to unwind & refit.14-09-04
HitachiCPT2476Bright pic varying left to rightcap in 200v supply on crt base14-09-04
HitachiCPT2476Int power offFocus spark gap dirty & int arcing14-09-04
HitachiCPT2488Blanked out pic apart from strip at top & bottom - improves with heatC574 100µ 40v in field timebase14-09-04
HitachiCPT2488 Sal kBLANKED OUT PIC EXCEPT FOR TOP AND BOTTOM OF SCRC574 100mfd , 40v14-09-04
HitachiCPT2488 Sal KDEAD NO/LOW START UP 8.5v ON PIN 8 LF0059TRY DIAC OR TB541 BC55714-09-04
HitachiCPT2508DeadQ901,IC901,R901,ZD901 4v7,D904,R913,C928 and C919. Also there was blown print between D904 and ZD901.14-09-04
HitachiCPT2508Dead - Field coupling cap C610 100µ 25v explodedLow res across 152v line due to s/c between field & line scan coils14-09-04
HitachiCPT2508TrippingReplace C910 & 916 33µ 10v; C919 4n7 2kv; C927 2n2 2kv. Change C914 to 10µ, check C909 150µ 400v, R919, R920, R931 & R93214-09-04
HitachiCPT2589FRAME COLLAPSEREPLACE R715 AND IC60114-09-04
HitachiCPT2598Field collR715 1R safety res, TDA3654 fop chip, D60114-09-04
HitachiCPT2598No colour - ok on TxtChroma delay line14-09-04
HitachiCPT2598Wavering picture with colour dropout which would randomly blank out to a blue screen in short bursts. Occasionally there would be no sound or vision at switch-on and only the channel change working.Replace C933 (2,200uF 25V) whose ESR had risen to 27 and C932 (470uF 16V) whose ESR had risen to 48. These two capacitors sit next to each other between the delay line and a heat sink. They were replaced with high temperature types.14-09-04
HitachiCPT2650 Sal JStartup - Long time for picture to come on.Incorrect grey-scale setting.14-09-04
HitachiCPT2655Dead supply line lowD508 in line stage14-09-04
HitachiCPT2656Bottom cramp - intPreset RTB573 470R14-09-04
HitachiCPT2656Dead - supply lines low & chirp at sw offD508 BY228 in lop leaky14-09-04
HitachiCPT2656To tune in chans 1 -4Enter service mode & sw off bit 0 - the little dot14-09-04
HitachiCPT2656 Sal JBottom cramp - top widened out.Linearity pot RTB573 ( 470R )14-09-04

HitachiCPT2656 Sal LBLANK RASTER , NO SOUND . TDA4505 us . MAY HAVE TO, RB135 TO 470K , RB122 AND 123 TO 220K , RB110 TO 1.5M , CB130 TO 33pf , RB128 AND RB587 TO 3.3K. IF NO COLOUR AND LINE TWITCHI14-09-04
HitachiCPT2656 Sal LDead300v ACROSS C707 BUT NO S2000AF COLL VOLTS R707 22ohm o/c T701 s/c14-09-04
HitachiCPT2656 Sal LINT BOTTOM PART OF PICTURE DISAPPEARSRTB573 470R PRESET INT OC14-09-04
HitachiCPT2656 Sal LInt Negative picCheck jumper links on Text PCB J3314-09-04
HitachiCPT2660 Sal JHIGH BRIGHTNESS AFTER FEW MINUTESDRY JOINT METAL SCREEN CAN14-09-04
HitachiCPT2660 Salora JLack of width with hor bands across bright scenesC712, 726 4µ7 63v, C514 1000µ 25v & C716 1µ hi esr14-09-04
HitachiCPT2808DeadCheck hi value res in psu - 100k o/c14-09-04
HitachiCPT2808Search tuning does not stopR936 10k hi res14-09-04
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