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MakeModel Ch.SymptomProblem SolutionSolutionBy:
Hypson HY1493 3915 TH
Popping or motorboating noise from speaker in standbyCheck Q951 JC501-Q, mitsubishi Pt no. 260P543050, and Q952 2SA950-Y, mitsubishi Pt no. 260P255040 and for dry joints around R954, R974 and R985
Salora 1HCA
No Power - dead T700 and T701 BUW41B and R713 22ohms, 5W. New parts work short time and dead againDry capacitors C712 and C726 4.7uF, 35V
Proline 28N1
Procedure to invoke service modePress and hold both the s/by button on r/c and vol-button on front of set whilst switching set on. Channel + and - select param and vol + and - adjust. S/by to storeVariant:
Panasonic EURO 7
Procedure to enter the service modeSet bass to maximum, treble to minimum, then hold down the index button on the remote and press the v button on the set
Samsung CW28C33N
Dead. in safety modeLooks like l.o.p.t but was traced to small decoupling cap on 200v line on tube base, dead short
Philips 21PT166B/00 AA5 AB
No drive to LOP transistorMiddle sections checked OK. Carefully scoping the TDA8361's Hor. output showed gnd level to be at +0.8v not enough to drive next stage. Change the TDA8361
Sharp 4BSC
Low width with lines across screen and feathered edgesReplace C623 and C602
Sharp 66FW53H DA100
Failure of Q601 BUH515 and possibly Q506Found dry joints on C613. Also R613 had burnt top of C613. Fitted new parts, found Circuit no longer available. Sharp by name sharp by nature came to mind. Set only just over two years old
Hitachi C32FW523NA A8
No or very dull picture with osd and text just visible, A1 control makes little difference, looks like poor crt18v zener diode Z703 s/c located near lopt, it is part of the acl beam current limiter
Hitachi C32FW523NA A8
Procedure to enter service modeSwitch tv on then press menu then press vol up and vol down on the front of the set simultaneously and hold until menu appears
Mitsubishi CT25M2TX
Frame collapse, destruction of AN5521 frame chip at switch onReplace the AN5521 then replace the 47uF, 35v electrolytic in the power supply. Also check the 330uF, 35v capacitor next to the frame chip for leakage
Sanyo 21BN1
Dead, l.e.d. litR620 o/c. R621 and R620 replaced both 120K
Samsung CK-5320ZR SCT11D
Field collapseCheck R410 1ohm in feed to D403 for o/c
Nei C25F4FR CE25 Series
Int failure of the TDA8380 and SGSIF344Connect wire link between jungle i.c ground lugs to
Mitsubishi CT29B2STX
Blank raster with sound / field collapseThe field output chip IC451 TDA8178S was faulty, as this original Mitubishi part was no longer available a kit had to be fitted no.H27PO14010 for this model, this uses a different chip - type STV9379
Salora L
DeadDN15 s/c 8v line
Philips GR2.2AA
Protection circuit operating intermittentlyDiode 6592 was found to have leakage causing voltage to protection circuit to be too high, Should be 23 - 28mV
Toshiba 3798DG C8SS
E/W Pincushion distortionReplace D461 damper diode ERC20-06
Seleco 26SA37NL
White line in middle screen, several spikesCheck power switch for arcing, also check 1 ohm resistors on switch board for possible dry joints
Jvc HRD750
DeadThis was due to C14 1uF, 63v in p.s.u being faulty, replaced with a 2.2uF, 63V