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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

MakeModelProblemSolutionAddedDate
 
Found: 711
SharpCA10green patches/strange colours (usually on bright scenes)CRT shadowmask warping on excessive beam current. Enter service mode, select page 00 and set POS 04 (brightness) to 24; POS 05 (saturation) to 2C; POS 06 (contrast) to 4B.plamensl14-09-2004
SharpCA10No response to R/C or front controlsCheck R704/5 68k but in this case the main micro IC101 C161K had a short on pin 74 data I/P - lifting this pin gave correct amplitude of data across R102. Chip is 80 pin sm device!plamensl14-09-2004
SharpCA10no soundaudio Ics muted due to pin 12 being held low, SMD C2310 or C2320 33nF leakyplamensl14-09-2004
SharpCA10not memorising customer preferences (col, bright, cont) every time the set switched onthere is no customer preference memory on these sets, alter for optimum in service modeplamensl14-09-2004
SharpCA10service modeto enter service mode switch on while holding VOL- and CH+ togetherplamensl14-09-2004
SharpCA10 51DS02Hno soundIC104 NVM24C16 (RHIX1588BMZZ)plamensl14-09-2004
SharpCA10 59/66DS03Hbottom half of pic Ok, top half stretched with bright line in the centre15V supply missing, replace fuse F601 1A near LOPTxplamensl14-09-2004
SharpCA10 59/66DS03Hbottom half of screen dark on high contract scenesreplace D514 1N4148 (leaky), feeds off frame stage to pin 22 jungle IC201plamensl14-09-2004
SharpCA10 59/66DS03HdeadC613 680nF 250V burn-up or buckled, also R613 2.2k R610 safety 33R (RRXZ0218BMZZ)plamensl14-09-2004
SharpCA10 59/66DS03Hdead, line drive present on base of LOPTr but it is not being turned onlack of bias to Q602 due to D605 o/c (RHDX0591BMZZ)plamensl14-09-2004
SharpCA10 59/66DS03Hdead, neon light onR704 68k 1W (no 5V to Micro)plamensl14-09-2004
SharpCA10 59/66DS03Hdistortion on right channelSMD C2314 100nF leakyplamensl14-09-2004
SharpCA10 59/66DS03Hexcessive width with E/W errorreplace R519 100k (o/c)plamensl14-09-2004
SharpCA10 59/66DS03Hframe collapsefuse F602 o/c (QFSJ2521CEZZ)plamensl14-09-2004
SharpCA10 59/66DS03Hno remote or front control functionsR704, R705 68k 1W in 5V supply to Micro are high or o/cplamensl14-09-2004
SharpCA10 59/66DS03Hno remote or local buttons functionR705 68k o/c (no supply to IC702)plamensl14-09-2004
SharpCA10 59/66DS03Hno sound on speakers, Ok on headphonesSMD C2310 33nF leaky (45V line down to about 30V)plamensl14-09-2004
SharpCA10 59/66DS03Hpartial frame collapse and foldoverreplace fuses F0601, F0602 rear of PCB, upgrade to 2.5A. If fuses Ok, check R617 22Rplamensl14-09-2004
SharpCA10 59/66DS03Hset won't start (no line drive)D602 s/c in -13V supply (RHDX0504BMZZ)plamensl14-09-2004
SharpCA10 59DS03HDead apart from neon glowingR703/705 68k hi resplamensl14-09-2004
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