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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: 179
Beko2841ND - 14.1 chassisLines across top 3 - 4 inches of picR422 35v feed to IC501 fop chip never been soldered14-09-04
FergusonTX100 Chassis (Turkish)Switches to Stby after a while.Change two 5V regulators in the control board.(TDD1605)14-09-04

GoldstarMC41 A chassisDead with STRS6707 blownCheck C819 4n7 2kv for burn before replacement14-09-04
Goodmans256NS L6.3AA ChassisE/W distC2913 (390n 250v) and 7908 (STP4NA40F1) mosfet14-09-04
Goodmans286NS (Philips L6.3 chassis)No sound - noise only from speakersMPS3410 chip faulty - replaced audio pcb14-09-04
GoodmansTX92 chassisHotel mode (no tuning menu) - to unlock) turn TV in to standby from remote 2) turn power off from mains on/off switch and wait until led goes off. 3)hold standby button on remote control and power up from on/of switch hold standbye button for about 10 seconds then de/active hotel lock. 14-09-04
Grundig3500 ChassisNo tuning , check pins 13 , 15 of tuner/IF for tuninIf stuck at 30v replace SDA3202 and SDA251614-09-04
GrundigGSC200 ChassisArcing in picture. Reduced width with torn edges.The HO Transformer has a built in fuse holder which houses a 50mA fuse. (connected in series with the high tension cable). Replace the fuse and clean the contacts.14-09-04
GrundigGSC200 ChassisBlack screen, EHT at about 18 KVs.Change Di511.14-09-04
GrundigGSC200 ChassisNo sound or Picture, led displays not lit.EHT at 18KV.C2607 in relay PCB Sced.Check also D334 and D335 in tuning module as in one case they were found to be Sced together with C2607.14-09-04
HitachiC1714TE (A15 chassis)No Txt & delay in returning to st/byCheck 5v supply pin 44 micro - if low ZD4001 5v1 zener is sus14-09-04
HitachiC1714TE (A15 chassis)To acess service menupress the following buttons on the remote: 4 4 STATUS MUTE TV in that order and fairly quickly. The service menu is displayed. Check that BYTE 1 = 7D; BYTE 2 = 20 These are two hex digits - to exit menu press st/by14-09-04
HitachiC28300,C2576TN etc A5 chassisField lin & lines at top of picC725 33nF 400v14-09-04
HitachiC28300,C2576TN etc A5 chassisInt trips & linesC719 4µ7 250v smoothing cap for 200v in E-W corr & check joints T702 (under plastic strut) & R950 68k near HT pot14-09-04
HitachiC28300,C2576TN etc A5 chassisRed pic with fb linesR829 fusible on crt base o/c (not shown on cct diag)14-09-04
ITTChassis 80R110Set switches to Stby after running for a while.Change D761 13V zener.Seems to be OK with a Vom.14-09-04
JVCAV21F1EK JX ChassisNo OSD ot Txt - could be intCheck dry joints reg IC52214-09-04
JVCAV25F1EK JX ChassisDead - LOPTr Q502 BU508AFI s/cCaused by faulty LOPTx14-09-04
JVCBYX chassisLoss of some chansIF module SBY-F004A proved to be heat sensitive - retune T102 V C Osc coil14-09-04
JVCBYX chassisNo memorise chans or settingsIC001 MN1226S, C106, C107 on station select module14-09-04
Loewe-OptaME26/Chassis110C8East-West. Excessive width, won't adjust.Change L573. Seemed to be OK visually.14-09-04
Loewe-OptaME26/Chassis110C8Very int. Field collapse, white line in the center of screen for a few seconds, and then black screen with no sound.When the problem occurs, make continuity check between pin 12 of the yoke plug and pin6 of vertical IC. If open, fit a piece of wire.14-09-04

Loewe-OptaME26/Chassis110C8Won't start, goes to Stby. Hor driver T541 Sced, supply resistor R503 oc. After replacement, It was Sced again.Change C546 0,33uF/250V located in front of the LOPT transistor. Also check/replace C503 22uF cap.14-09-04
Metz11AK20 ChassisSwitches to standby when hot.Change/replace C601 100nf and C605 3,3uF.14-09-04
Metz11AK20 ChassisWon't search/Search menu is not correct. Displays "enter channel number" although tuner is not synthesised.Replace microcontroller IC.14-09-04
MetzChassis 679GWon't start, led displays lit.Check/replace D1211,D1210 and C1205 Cap on VK module.14-09-04
MetzChassis 680G/681GGradual loss of contrast and focus from bottom of screen to top, when increasing brightness or in shiny passages.Change or clean and readjust trimmer pot R857.14-09-04
MetzChassis 680G/681GStarts with black screen, if G2 increased and brightness and contrast are set to max, picture faintly visible.Change TR901 in decoder module. Leak was detected with a VOM.14-09-04
MitsubishiCT25MSTX E14 chassisDead - st/by led lights briefly at sw ondry joints on IC951. Drys were also found on regulators IC952, IC954 & IC955.14-09-04
MitsubishiCT29AS1TX etcTxt break thro' or black square in centre of screenC958, 956 2200µ 16v & check C952, 974 & 97314-09-04
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