| Make | Model | Problem | Solution | Date |
| | | |
| Found: 711
|
| Sharp | 51CS | Dead | R643 22R 1/2w fusible had risen in value to 50R | 14-09-04 |
| Sharp | 51CS-05H CS | Dead with short between C & E of LOPTr | C602 1nF 2000v was causing it - leaky | 14-09-04 |
| Sharp | 51CS03 | Slow start up then st/by only | C712 220µ 25v | 14-09-04 |
| Sharp | 51CS03H | No / int field collapse | Resolder L501 ( joints on body ) | 14-09-04 |
| Sharp | 51CS03H 59CS03H | Field fault , or general modification . | Add 1N4148 from emitter Q509 to cathode D513 ( cathode to E Q509 . Pt No RH-DX0045BMZZ ) . Change R534 for 390R ( Pt No VRS-T | 14-09-04 |
| Sharp | 51CS03H 59CS03H | Int bleep from speakers or int no sound ( when hot | Add wire link from pin 22 IC301and pins 28 , 29 ( Gnd ) | 14-09-04 |
| Sharp | 51CS03H 59CS03H | Int flyback lines ( may be red , greeen or blue ) | Flux becoming conductive on Q870 , 871 , 872 . remove transistors , clean pcb and transistors and replace . | 14-09-04 |
| Sharp | 51CS03H 59CS03H | Stuck in StBy . | If no 300v across C708 check for continuity from D704 cathode to L703 . PCB sometimes damaged in transit . | 14-09-04 |
| Sharp | 51DS-02S CA10 | Dead | Q602 (BUH515) & both audio amps IC2300 & 2301 (TDA7480) s/c, also C720 100uF/200V) blown top. | 14-09-04 |
| Sharp | 51DS-02S CA10 | HT high at 200v (112v) | Opto IC705 (MOC8106). | 14-09-04 |
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| Sharp | 51DS02 | GREEN PATCHES AND STRANGE COLOURS ON BRIGHT SCENE | ENTER SERVICE MODE (HOLD VOL- AND CH+ AND SWITCH ON) SELECT PAGE 00 AND SET POS 04 TO 24 POS 05 TO 2C AND POS 06 TO 4B | 14-09-04 |
| SHARP | 51DS02H | NO SOUND | REPLACE IC104 SHARRRHIX1588BMZZ | 14-09-04 |
| Sharp | 51DS02H | St/by only & no control of front controls | R705 68k micro feed o/c | 14-09-04 |
| Sharp | 51DS02H CA10 | Sound absent | corrupted EEPROM (8-pin SMD IC104 24C16) due to DJ on LOPTx earthing pin (focus, screen pots). | 14-09-04 |
| Sharp | 51DS02H CA10 | When replacing EEPROM | switch set on, after 10 sec delay whilst micro writes data, tune all the channels & select weakest then sw off tv. To enter service mode hold Ch+ & Vol- on front panel while switching mains on. Set comes on in service mode on weakest chan, using ch+/- on R/C choose "AGC take over" in menu & press STANDBY, set will adjust AGC automatically.
Now correct geometry if reqd.& press STANDBY to memorize. To exit service mode simply switch off. | 14-09-04 |
| Sharp | 51DS03H | St/by only | R705 68k hi res | 14-09-04 |
| Sharp | 51DS03H | Stuck on 1 chan (ITV) | R704 68k hi res | 14-09-04 |
| Sharp | 51DS05H CA10 | Int reverts to st/by | Fault can be induced by flexing main pcb - dry joints micro IC101 sm on print side underneath | 14-09-04 |
| SHARP | 51DT-25H | FRAME COLLAPSE WITH NO SOUND | CHECK Q500 BC328 | 14-09-04 |
| Sharp | 51DT-25H | Lack of height, no vid & tuning drift at sw on | NV memory mode - fit 2 x zeners D510/511 pt no EX0404BM22, fit coil Pt no VP-CF120K0000 in place of link J122 & fit another zener D403 pt no RH-EX0412BMZZ. (Cct ref printed on pcb) | 14-09-04 |
| Sharp | 51DT-25H | Lines across screen when cold | C604 220u 10v | 14-09-04 |
| Sharp | 51DT-25H CA1 | Stuck in st/by with motorboating from spkr | C712 220µ 16v in 10v supply almost o/c | 14-09-04 |
| Sharp | 51DT25H | Dead - no st/by | R705 560k o/c, also replaced R704 560k | 14-09-04 |
| Sharp | 51DT25H | Going off tune picture blanks etc | C715 470mfd 10v o/c | 14-09-04 |
| Sharp | 51DT25H | int blank raster, lack of height, off tune | Fit D511 & 512 3v6 zeners in marked places next to IC201, fit D403 by plug K - replace link 122 in 5v supply with 12µ coil. | 14-09-04 |
| Sharp | 51DT25H | Int lack of height or off tune when 1st sw on - ok at subsequent sw on | Sharp mod - add 3.6v zener between pin 63 IC201(cathode) & chassis; add another 3v6 zener pin 64 & chassis(cath to chip). Substitute link J122 with 12uH coil pt no VP-CF120K0000; Add 7v5 zener pin 30 (cath) & chassis. Check CRT final anode for cleanliness | 14-09-04 |
| Sharp | 51FS51H | AGC overload/off tune type fault | Tuner faulty | 14-09-04 |
| Sharp | 56FW-53H | Dead & E/W problems | LOPTr BUH515 leaky, C613 SH1010 - CHS dry jointed & o/c - cause of problem, L603 RCILP0286BMZZ, Q506 RHTX0151BMZZ(2SD2391Q) sm E/W Tr, R613 3k3 3w, D516 47v zener | 14-09-04 |
| Sharp | 56FW-53H DA50W | E/W faulty | C613 560nF 250v o/c in LOP stage | 14-09-04 |
| Sharp | 56FW53H | Blows LOPTr int at sw on | C607 330µ in line driver | 14-09-04 |