GRUNDIG TELEVISION REPAIR AND TROUBLESHOOTING  TIPS

You can find out here if you have the same problems or symptoms of your televison.
Note: These troubleshooting tips are not guarantee that you can fix your unit right away and won’t solve all the component problems you may run into, but they should solve a good number of them. Servicetron.com is not responsible for any damage as a result of following any of this advice.






GRUNDIG TV PROBLEM & CURE

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  • Grundig cuc220 dead- check r646 (270k) in the psu cct.
  • Grundig cuc220 excess color/brill t/text panel
  • Grundig cuc220 field collapse. R2779 18kohm was open-circuit
  • Grundig cuc220 field collapse. R2779(18k)
  • Grundig cuc220 field lin. Ic tda1770,d2761(ske4g1/04),r2761(6r8)
  • Grundig cuc220 hot jumbled display leds d671(ske4f).
  • Grundig cuc220 intermittent dead r646 (270k) tda4600 & ht pot r647 (2k5)
  • Grundig cuc220 intermittent start up c631 (100uf 40v)+c633 220uf + grundig c647 (1uf)+ c642 (100uf)& r646 (270k).
  • Grundig cuc220 intermittent starting replace the tda4600.
  • Grundig cuc220 interference at sides. Ic tda2595 sync/line osc ic.
  • Grundig cuc220 no tuning 30vok,u264(use u644b) under screening can.
  • Grundig cuc220 odd chan disp ic663(5v reg)
  • Grundig cuc220 poor start tda4600 & c631 (100uf 40v).
  • Grundig cuc220 poor start- relay contacts faulty .
  • Grundig cuc220 ringing verticals c633 220uf, c647 1uf and c642 100uf, r646 270kohm.
  • Grundig cuc220 rolling picture c2216 & c2221 (1uf 63v) in if can by the tda5500 chip .
  • Grundig cuc220 stby r647 ic663(5v reg)
  • Grundig cuc220 warms up goes dead & odd display d671 ske4f.
  • Grundig cuc220 won't tune u264b/u644b prescaler chip in the tuner/if block.
  • Grundig cuc2200 small raster. Di614(75v zen)
  • Grundig cuc2201 combi tx sec windings n & l
  • Grundig cuc2201 intermittent dead- r637 1k set ht pot.
  • Grundig cuc2201 poor starting- replace the set ht control r637(1k.)
  • Grundig cuc2400 low sound -tuner was faulty. No other problems were evident.
  • Grundig cuc2400 dead bu508d s/c.
  • Grundig cuc2400 flashing picture. Poor contact on crt base.
  • Grundig cuc2400 intermittent field bounce. Mod kit available.
  • Grundig cuc2400 low sound -tuner unit faulty.
  • Grundig cuc2400 no blue- r760 r769 (15k) on crt base.
  • Grundig cuc2400 will not tune in. 5v rail down to 4v,ic676(mc78mq5ct)
  • Grundig cuc2400 stby 4m7 psu tween the 2 earth rails
  • Grundig cuc2401 bu508 hot tda8140.
  • Grundig cuc2401 dead - replace capacitor c633 (100uf 25v)
  • Grundig cuc2401 dead- d666 snubber.
  • Grundig cuc2401 dead- ht ok loptx pins
  • Grundig cuc2401 field blanking faults-check r525 0r33
  • Grundig cuc2401 field collapse d2758 by298 c2758 1000uf
  • Grundig cuc2401 intermittent dead - change the ht pot r367 1k
  • Grundig cuc2401 intermittent field collapse- d2758 defective.
  • Grundig cuc2401 intermittent start -tda4600.
  • Grundig cuc2401 intermittent to standby- tripler faulty.
  • Grundig cuc2401 intermittent to standby- replace cap c661 (7uf 25v)
  • Grundig cuc2401 line collapse -loptx.
  • Grundig cuc2401 low sound -tuner faulty.
  • Grundig cuc2401 low sound tuner was faulty. No other problems were evident.
  • Grundig cuc2401 no pic sound ok tr2523 bc548c
  • Grundig cuc2401 no pic/line collapse, loptx
  • Grundig cuc2401 no sound c2276 (470uf) .
  • Grundig cuc2401 no sound tba130 & c2276 (470uf).
  • Grundig cuc2401 no sound tda2595, tda130 sda2011-a003 micropro
  • Grundig cuc2401 poor start first check r637 (1k).
  • Grundig cuc2401stuck in standby- set ht control r637(1k)
  • Grundig cuc2410 arcing tripler+ ram in tuner,field output , if amplifier chip +tba 130
  • Grundig cuc2800 no sound tda6200 u2829b
  • Grundig cuc2800 no sound tda6200 u2829b sound demodulator
  • Grundig cuc2800 snd one chan no brill adj micropro sda2011-a005
  • Grundig cuc2800 tripler then one sound fixed brill sda2011a005.
  • Grundig cuc2800; low dist snd u2829b(wve).
  • Grundig cuc2800; no sound tda2600 or u2829b.
  • Grundig cuc30 blue screen ic61050, ic61060, ic61040 regs
  • Grundig cuc3300 dim picture & poor focus replace c433 (1,000uf 25v).
  • Grundig cuc3300 poor dark/focus c433 1000uf 25v.
  • Grundig cuc3300 poor purity & focus. C433 (1,000uf 25v).
  • Grundig cuc3400 blue raster tda3505 vid proc chip ic9531 on chroma board
  • Grundig cuc3400 cold no chan tuner/if socket
  • Grundig cuc3400 dead d691 byv28/100 was short circuit. It's the 20v-supply
  • Grundig cuc3400 dead 800ma fuse choptx pins d663 d664 d666 c653 4n7 c667 2u2f
  • Grundig cuc3400 dead ;d691 (byv28/100) s/c.
  • Grundig cuc3400 dead but11a chopt t661 loptx pins d663/4 d666 byd33m tda3640 4.7nf c653 c667 is 2.2uf
  • Grundig cuc3400 dead & "buzzing" c630 (0.68uf) was leaky.
  • Grundig cuc3400 dead c630 0u68f.
  • Grundig cuc3400 dead cap c653 4n7.
  • Grundig cuc3400 dead d691 byv28/10 in the 20v supply.
  • Grundig cuc3400 dead set ht control(r637) int,d666 d664,ic686 78m05
  • Grundig cuc3400 dead set ht pot r637+ d666 byv16+d664 ba159 & ic686 78m05.
  • Grundig cuc3400 dead replace capacitor c667(2u2f 400v).
  • Grundig cuc3400 dead - a faulty loptx was the cause.
  • Grundig cuc3400 dim pic/poor focus c433 1,000uf, 25v
  • Grundig cuc3400 int color rhs blanked tda2579 timebase chip
  • Grundig cuc3400 int color/blanking rhs,tda2579 timebase generator chip was faulty.
  • Grundig cuc3400 intermittent dead -loptx.
  • Grundig cuc3400 no raster/ eht and sound ok, low a1s crt socket.
  • Grundig cuc3400 no sound- c266 (1000uf 25v) & r367 (8r2).
  • Grundig cuc3400 no sound r367 was open circuit and c366 short circuit.
  • Grundig cuc3400 no start ticks c653 4n7f from pin 15 of power chip
  • Grundig cuc3400 poor ht regulation - c611 (47uf) cap.
  • Grundig cuc3400 poor purity & focus. C433(1,000uf,25v)
  • Grundig cuc3400 poor remote r1212 33r missing in sens pcb
  • Grundig cuc3400 snd/eht ok no pic crt socket
  • Grundig cuc3400 tripping set- replace the set ht pot r637.
  • Grundig cuc3490 dead fuse choptr c667 2u2f(2 caps)
  • Grundig cuc3490 dead fuse; choptr pin 5 of daughter pcb
  • Grundig cuc3490 field non linear capacitor c411 1000uf 50v low.
  • Grundig cuc3490 no line drive tr651 mainstx pins 1-15,pins 15-17
  • Grundig cuc3490 no pic sound ok check crt base socket.
  • Grundig cuc3490 no sound-check/replace r367 & c366.
  • Grundig cuc3490 no sound - suspect a faulty tda4480.
  • Grundig cuc3500 dead low ht 196vn d635 faulty.
  • Grundig cuc3500 no sound/picture- check diode d635.
  • Grundig cuc3500 no sound (av sound ok) - ic2210 defective ( u2829).
  • Grundig cuc3500 no sound/pic d635 bat86 has gone short circuit.
  • Vcuc3500 no tuning ,sda 3202 chip+ sda2516 memory chip cured the fault.
  • Grundig cuc3600 breathes with brilliance variations -tripler/focus unit.
  • Grundig cuc3600 broad white vert bar c507 100uf ic550 tda8140 line freq
  • Grundig cuc3600 no picture - the tda8442 chip was faulty.
  • Grundig cuc3600 no pic c507 100uf ic550 tda8140
  • Grundig cuc3600 no/blanked pic tda8442

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