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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: 65
AmstradCTV250Bright raster with fb linesTEA5101A driver on crt base failed & feed res14-09-04
AmstradCTV250dim red rasterTDA3301B decoder chip u/s14-09-04

AmstradCTV250int offdry joints chopper tfmr14-09-04
AmstradCTV250No contrastTr102 BC558 leaky c-e14-09-04
AmstradCTV250No secondary suppliesReplaced C418 100µ 25v, C489 100µ 40v, C425 1µ 400v, positor PTC401, R422 5R6 1w o/c, and chopper tfmr14-09-04
AmstradCTV250/280E/W intdry joints CH351 choke feeding pin 5 IC351 TDA814514-09-04
B & O2500 LX2802Int reverts to st/by briefly with blank raster on returnTr6 - use BC338-40 as replacement - checks ok out of cct14-09-04
B & OL2500Servicing the L2500Picture on cover & layout.14-09-04
B & OL2500 LStuck in standby.BU508 s/c.14-09-04
B & OL2502No soundIC101 pin 7 (5.9v) = 0v C111 100µ 25v s/c14-09-04
B & OL2502 (3866)Dead & squealingResolder a mass of dry joints on the PSU & line output panel then replace the short circuit line output transistor (TR11) S2000A3.14-09-04
B & OL2502 3866Int starting , chopper drive present. If pin 3 IC1 , LM358 low check R14 & R16 , 220k.If still no go , check TR20 on Tuner IF PCB .14-09-04
B & OL2505st/by only after short squeal at sw onlop tr TR11 S2000A3 s/c and resolder dry joints esp at C34 6n814-09-04
B & OLX2500 37XXNO STBY LED SET STUCK IN STBYC14 470uF 16v OC14-09-04
B & OLX2502Field distortedReplaced C44, C45, C46, C49, C26, and C54 plus FOP chip TDA2170 that orig had dry joints14-09-04
B&OL2500psu shutdownline dr tr 4TR15 BC328-25 o/c b-c14-09-04
ContecKT8250dead - chan display and relay click presentR504 330k in psu o/c14-09-04
GrundigCUC2500Sometimes switches to St-by. Eventually does not startup at all.Replace TDA3640 chip14-09-04
HitachiC2508Int dead & makes screeching sound when it doesMains smoothing cap 150µ 400v low cap14-09-04
HitachiC2508Tuner drift on upper bandsZD101 33v stab14-09-04
HitachiC2508TLong time to come onMains smoothing cap 150µ 400v virtually o/c14-09-04
HitachiC2508TUnstable pic until heatedC922 faulty14-09-04

HitachiC2509TDeadReplace ZD903, Q903, Q781, C906, 908, 913, 908, 905, 720, RV901. R901, 910, 760, 761, 762, 768. ZD903 split in 214-09-04
HitachiC2509T G7PSField - bottom crampC606 680mfd 16v scan coupling cap14-09-04
HitachiCPT2250 JNo startup.R712.14-09-04
HitachiCPT2508DeadQ901,IC901,R901,ZD901 4v7,D904,R913,C928 and C919. Also there was blown print between D904 and ZD901.14-09-04
HitachiCPT2508Dead - Field coupling cap C610 100µ 25v explodedLow res across 152v line due to s/c between field & line scan coils14-09-04
HitachiCPT2508TrippingReplace C910 & 916 33µ 10v; C919 4n7 2kv; C927 2n2 2kv. Change C914 to 10µ, check C909 150µ 400v, R919, R920, R931 & R93214-09-04
HitachiG7P MkII CPT2508Dead - LOPTr blowsIC701 TDA257914-09-04
HitachiG7P MkII CPT2508Pic pulls to right when heatedQ905 connection to pcb suspect - resolder14-09-04
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