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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: 67
Alba90E529Int dead - freezer squirted on STR54041 restoresQ104 in psu pri14-09-04
DeccaD28NE55Field collapse TDA8350 cured this but 2 black lines at top of picR437 22R o/c14-09-04

DeccaD28NEE5Excess width & won't come on from st/byR814 75k, TR801, & ZD81314-09-04
DeccaD28NEE5Int deadR814 75k14-09-04
DeccaE series D28NEE5Audio gives 3 pops when turned off from st/by Attempting to start from residual chargeRemove R803 & 804 47k from pcb & connect together in R804 posn. Fit wire on copper side of pcb (?) - Official mod from Decca but not explained very well.14-09-04
DeccaE series D28NEE5Brightness fluctuates rapidly with poss fb linesC527 100n next to IC501 faulty14-09-04
DeccaE series D28NEE5Dead when cold - ok when heated5v rail low - IC804 5v reg14-09-04
DeccaE series D28NEE5E/W poor & Width excessive after FOP repairZD409 33v zener leaky - not shown on cct diag - pin 11 IC401 to earth14-09-04
DeccaE series D28NEE5Excess width/lack of height - int cuts out when heatedHT high at 177v (150v), R814 75k in HT pot divider14-09-04
DeccaE series D28NEE5Field collapseR422 1R2 fusible o/c off pin 6 LOPTx14-09-04
DeccaE series D28NEE5Field foldover with lines at topR437 1R2 o/c14-09-04
DeccaE series D28NEE514-09-04
NEI14D1X E5 series80% pic blanked out, 10% Txt banked - OSD okScl pulse dist (pin 7 IC301- unsolder to check pulse) TDA3653B faulty14-09-04
NEIE28G1FXN E5Dead - all sec rails low - no st/by LEDT682 BD679 15v reg14-09-04
NEIE28G1TFXN E5Buzz on mono reception - worse when OSD presentMod reqd - remove C150 33pF from main pcb & fit in posn C1591 on vert pcb. Add 100mm wire from left of free pin of C1591 to right of free hole of C15014-09-04
NEIE28G1TFXN E5DeadR866 2R2 safety res o/c, due to D682/683 BY399 failing when hot14-09-04
NEIE28G1TFXN E5Dead - st/by LED flashesMains smoothing cap 220µ 400v14-09-04
NEIE28G1TFXN E5Dead 220v across res capC665 14-09-04
NEIE28G1TFXN E5Dull or no picLow A1 screen volts - replace C20614-09-04
NEIE28G1TFXN E5Int blanks out with sound & pic disappearingDry joints IC682 reg on back edge of pcb14-09-04
NEIE28G1TFXN E5No R/C operation after initially coming on with R/C, tuner drift & erratic local controlsLow volts on micro - R686 2R2 hi res near SMPS Tx14-09-04
NEIE28G1TFXN E5PSU tripping with low o/p voltsC655 220µ 400v mains smoother14-09-04

NEIE28G1TFXN E5St/by only or int won't sw onDry joints IC682 reg on back edge of pcb14-09-04
NEIE28G1TFXN E5Stuck in st/by - int comes on with blank rasterD683 BY399 breaks down under load - reads ok out of cct14-09-04
NEIE28G1TFXN E5Vol varies - sw from Nicam to mono soundXtal Q1511 on nicam pcb - earth the casing14-09-04
NEIE5DeadD705 1N4003 NOTE bad batch of 1N4003's in set - replace the lot!14-09-04
NEIE5Field collapseD301 1N4003 NOTE bad batch of 1N4003's in set - replace the lot!14-09-04
NEIE5Trips at sw on - then deadD652 1N4003 NOTE bad batch of 1N4003's in set - replace the lot!14-09-04
NEIE5 ChassisChirping at low brightness with line jitterR655 330k & 1M across it hi res14-09-04
NEIE5 ChassisDead - Chopper tr IC651 & control chip IC651 s/cD653 BA159 s/c use BYT52M as replacement & check tracks for damage14-09-04
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