GRUNDIG TV Repair: Common Faults and Solutions.


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Search: GRUNDIG
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GRUNDIG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
GRUNDIGCUC7350
Screen without brightness. increasing ug2 appears white with return lines and little width. ht voltage drops to 65v. I test with a 60w bulb, it doesn't light up.R60028 from 0r56 changed to more at about 0r20.
GRUNDIGCUC7880
Defect and/orR503, l511, diodo d438 (33v) e ic430 (tda8350q)
GRUNDIGCUC7350
When turned on, the image appears with a lack of vertical synchronization. after a few seconds the STBY dropsTransistors ct58006 and ct58007 (smd)
GRUNDIGCUC7303
Tsound is sound, tsound is no image. When the screen is enlarged, light appears with return lines but no video.Shorted transistor t523.
GRUNDIGCUC7301
Lack of vertical sync on the OSD. is always passing byR404 (33k) on v sinc line. that goes to the processor. (smd match)
GRUNDIGP37-845 FR CHASSI CUC7300
W/o sound with non-standard imageSst 19 = bsakkhas
GRUNDIGCUC6360
After a while it switches to av1 or av2Tfms5300 ir receiver
GRUNDIGT51-070 CUC7301
Falls into protection. hang upT511 = bc548
GRUNDIGM84-210/8 IDTV CUC1827
Image shows wave probe typeC53312 = 142pf 2000v
GRUNDIGT50-440 CUC4400
S/ synchronismsMod fi t2243 = bc548
GRUNDIGTVR3740/1 TOP
Does not turn on, stays on st/byC840 47uf 63v
GRUNDIGCHASSIS CUC7303
No image appears on the screen, if we increase the voltage of the g2 the screen becomes dark, and the return lines appear.It could be r118 of 4.7Ω, ¼ w, interrupted, this resistance is in the supply of ic 105 (smd) tda4662, the same can happen to r119.
GRUNDIGCHASSIS CUC5310
Flickering in the image, light variations.The capacitor c681 4.7mf 350v, disabled, this component is inserted in the +c 200v voltage circuit.
GRUNDIGCUC6300
At startup it generates mat but within 1s it returns to stby, leaving no +b` (output from the ic676 lm317) and no line signal.Replace trc. it was shorted.
GRUNDIGCUC4400
Power supply does not generate voltagesC661 and c662 with low capacity. to replace.
GRUNDIGMW70-2700 16X9
Doesn't work.Cause r 220k which is part of a set. of series parallel resistances in sec. from open power supply, which causes the t60006 irfpc50 to short out
GRUNDIGCUC4400
T644 systematically shorts outC680 with leak
GRUNDIGCUC7303
It does not start, the power supply does not generate voltages in the secondary, it only has 300v.See r663 of 10r 1/4w in the primary, it may be interrupted.
GRUNDIGG1000
It ticks, the power supply does not start, the secondary part of the power supply is fine!See and replace the c111 1nf/1kv. This capacitor is connected between the collector and the ground.
GRUNDIGT63-640A TEXT
CUC6310		Tda8145 with excessive heating and the rv’s, e/w adjustment r462, 460 and 431 do not work.L569 with shorted turns due to excessive heating caused due to a previous fault on this line. or, d566 shorted. Also check the following components: c461(100mf/35v), c412(1000mf/35v and c413(1000mf/35v). rewind l569 using new wire.Duartes