| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| 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) | ||
| SHARP | 51DT-25H | FRAME COLLAPSE WITH NO SOUND | CHECK Q500 BC328 | ||
| 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 | ||
| 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. | ||
| Sharp | 51DT25H | Going off tune picture blanks etc | C715 470mfd 10v o/c | ||
| Sharp | 51DT25H | Dead - no st/by | R705 560k o/c, also replaced R704 560k | ||
| 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 | ||
| Sharp | 51DS03H | Stuck on 1 chan (ITV) | R704 68k hi res | ||
| Sharp | 51DS03H | St/by only | R705 68k hi res | ||
| Sharp | 51DS-02S CA10 | HT high at 200v (112v) | Opto IC705 (MOC8106). | ||
| Sharp | 51DS-02S CA10 | Dead | Q602 (BUH515) & both audio amps IC2300 & 2301 (TDA7480) s/c, also C720 100uF/200V) blown top. | ||
| 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. | ||
| Sharp | 51DS02H CA10 | Sound absent | corrupted EEPROM (8-pin SMD IC104 24C16) due to DJ on LOPTx earthing pin (focus, screen pots). | ||
| Sharp | 51DS02H | St/by only & no control of front controls | R705 68k micro feed o/c | ||
| SHARP | 51DS02H | NO SOUND | REPLACE IC104 SHARRRHIX1588BMZZ |