TV
Repair Database
|
Aiwa |
VXT1000 |
STK7348 chopper chip int fails |
C88 3300pF 1kv can be the cause even tho' it looks ok |
|
Aiwa |
VXT1000 Mk2 |
Dead |
STK7348 s/c pins 3 & 7, also R103 1R5 3W o/c, R104 27R 3w, R105 1k 1/2w &
C90 1µ 50v |
|
Akura |
CX25 |
Dead |
Start up res R804/805 15k (or 18k) 2w |
|
Alba |
4859 11AK19 |
No line drive at sw on (150v HT to LOPTr) |
Dis'd D814/815 (+14 & -14v audio o/p ic supply diodes). Replacing TDA2615
aud o/p chip resulted in bright white raster & flickering LED; R914 47R 200v
feed to IC901 TDA6107Q on crt base o/c & IC s/c |
|
Amstrad |
CTV2020/2028 Bush 2866 |
Searches but finds no sigs |
R124 15K 2W O/C located
behind the PSU in the centre nearest the front controls |
|
Amstrad |
CTV3121NF 11AK12 |
No response from R/C although R/C is outputting a signal |
Was still faulty handset - dry joints IC giving wrong output codes |
|
Amstrad |
WSTV7328NF 11AK19 |
Narrow with E-W bowing |
R629 10R o/c - check for dry joints on caps |
|
B & O |
LX5500 3903 |
St/by only after initially being hard to turn on |
C20 & 25 47µ 50v |
|
B & O |
LZ5000 3766 |
Won't work on batt - ok on mains |
Aux sw behind mains sw contacts needed resetting - make sure battery supply
is adequate |
|
B & O |
MX4500 |
Vision buzz & noisy pic |
Check C176 10µ under screening can |
|
B & O |
Various |
Dead - Tr1 in PSU s/c |
Check C12 for dry joint in snubber of psu |
|
Beko |
2832T |
Pic takes a long time to appear |
R213/4/5 22k on crt base or LOPTx |
|
Blaupunkt |
FM100-30 |
Entering service mode |
Power up set with "ME" pressed V-Amp press brightness then adjust with plus
and minus,store with ME
V-Shift press >< ......
H-Width press colour ......
H-Shift press volume ......
Power off with mains switch.
Power on the set with ME depressed until display is lit.
Audio-norm press P
Power off with mains switch.
Power on the set with ME depressed until display is lit.
Standby-enable press oo (two channel mode)
Power off with mains switch.
two digit program-numbers,select between1-9,press C and select
channel,press ME and select within 5 seconds two digit number,
the numbers in your choosen decade are now enabled and accessable.
|
|
Bush |
1433 11AK20 |
Int dead or reverting to st/by |
Dry joints IC802 reg & IC401 jungle chip (under IF shielding plate) |
|
Bush |
1433 11AK20 |
No pic - sound ok |
Loptx arcing with C615 - LOPTx faulty |
|
Bush |
1433 11AK20S |
Poor video HF response |
Check R931, R932 & R933 150k on crt base |
|
Bush |
1434 11AK20M-3 |
Shuts down with ticking noise |
D604 BA157 s/c |
|
Bush |
2029T Onwa |
Will not sw to st/by after the usual blow up & replacement of 47µ caps etc |
Q507 BUT11AF s/c & driver Q506 2N5401 o/c - NOTE Q506 markings wrong on pcb
- can use 2N5401 in lieu |
|
Bush |
2146NTX |
Dead with Green LED flashing |
LOPtx CHS order code ALB586 |
|
Bush |
2768NTXSIL |
St/by only - LOPTr blown |
Also replace line dr tr 2SC1573 |
|
Bush |
2850NTX TV4 |
Line collapse |
Can be dry joints scan coil plug but C419 330nF 400v scan coupling cap burnt
& o/c in this case |
|
Bush |
2857NTX |
Nicam popping |
X001 13.104Mhz Xtal faulty |
|
Bush |
2866NTX SM2 |
Txt missing |
Short pin 20 of IC301 the micro to earth then switch on. Service menu should
appear
Service- Telra V2.0; OP byte 1 OX OB; OP byte2 OX BO Init EEPROM.
Use P+/P- tp select the line to adjust and V+/V- to adjust.Bytes 1 and two
must be as shown above.
To initialise the EEprom select the line and press V+/V- Correct handset
reqd. |
|
Bush |
2867NTX |
Field collapse & no sound |
No LT supply to jungle chip as R818 22k 2w o/c |
|
Bush |
2871NTX 11AK19 |
Tripping - LOPTr BU2508AF s/c |
Caused by scan coil plug on pcb arcing internally |
|
Bush |
2876NTX |
E-W faulty |
Dry joints L652 |
|
Bush |
6690D (IDTV) |
No vol/menu/chan change in normal mode |
reset remote unit by pressing left , right, down[cursor keys]and the
number one key at the same time for 5 seconds then release.[should this
fail to resolve problems similar to above then micro suspect] |
|
Bush |
WS6672 |
Blank white raster with fback lines aft replacing LOPTr |
No 220v to RGB as RD12 15R on main pcb to left of LOPTx o/c due to previous
dry joint on scan coils had blown LOPTr |
|
Daewoo |
GB14F7T1 |
Won't sw on with tape stuck - st/by only |
No volts at 6v reg IC1806 - P803 plug/skt has 8v in but no 8v o/p due to dry
joint on/off sw |
|
Daewoo |
GB2898ST |
Buzz on sound at low level |
resolder fop chip heatsink |
|
Ferguson |
ICC17 / 19 |
Service mode access |
Go to St/By, turn set off using power switch. When red LED goes off, hold
down prog- and vol- keys on T.V and power up keeping both buttons held down
for at least 8 seconds until STANDBY light goes yellow. To navigate through
the menus use the arrow keys.To exit service mode put T.V into standby. |
|
Ferguson |
ICC17 W7023U |
Trips at sw on with led flashing 3 then 2 then 7 then 2 flashes then reverts
to perm illum |
LOPTx faulty- check for brown gunge on top - also obtain mod kit (psu will
not run unloaded) |
|
Ferguson |
ICC5 51K7 |
Dead with 1.6A FP05 fuse bown |
Check mains filter caps CP02 & RP01 positor |
|
Ferguson |
ICC5 59K5 |
Int trips off or failure to start |
Prot I/P at pin 28 IL14 TEA2029C being turned on. Dry joint RL18 4k7 (near
pin 1 of LOPTx) |
|
Ferguson |
ICC8 |
Dead - brief burst of HT/EHT with HT at 115v then trips silently - same on
dummy load |
DL13 BY397 s/c |
|
Ferguson |
ICC8 B68N |
Dead - psu starts for about 5 secs |
Line dr tr BSR51 TL17 faulty - used BC879 in lieu |
|
Ferguson |
TX805 T14R |
Tripping slowly |
LOPTx |
|
Fidelity |
CTV3121NF 11AK12 |
Faintly tripping |
D22 s/c (5v supply tfrom chopper trfrmr) & chopper transformer faulty |
|
Goodmans |
285NS Daewoo CP775 |
Dead - faint tick from psu |
Q401 2SD1880 LOPTr s/c, D406 BYW95C s/c - both caused by LOPTx faulty
(HR7927) |
|
Goodmans |
285NS Daewoo GB2898ST |
Buzz on sound at low level |
resolder fop chip heatsink |
|
Goodmans |
C210 |
Field collapse & sounds like line freq off |
470µ cap connected to DP18 F08AGO |
|
Goodmans |
GD2580 TX92 |
Int dead |
dry joints CP13 1nF5 1.6kv |
|
Goodmans |
GD2592 |
Dead with blackened mains fuse |
Chopper FETTr TP16 s/c, dry joints CP13 & DP51 BY399 HT rect s/c |
|
Goodmans |
GTV288 11AK19-8A |
Poor contrast - poor sync - no colour -sound intermittent |
TDA8843 |
|
Goodmans |
GTV66W1 11AK19 |
Tripping |
Audio O/P IC TDA2615 |
|
Goodmans |
W288NS |
Dead - mains fuse blasted |
Mains rects s/c & chopper transformer shorted also TDA4601 chopper chip |
|
Goodmans |
W288NS |
Width closes in gradually then LOPTr goes s/c |
Dist line dr wfmr caused by Line dr trfmr - was able to clean/resolder pins |
|
Granada |
C41HS4 Sanyo E4A/B |
Field reduced or collapse with blank raster |
12v reg L78M12 |
|
Granada |
C51GZ5 Salora L |
Field collapse |
Change TDA3654 and 100mfd 50v next to it CB575. 25v is fed from ipsalo
transformer pin 13 via diode BB612 and safety resistor RB616.Check for dry
joints on stand up panel next to Trfmr |
|
Granada |
CD51JS2B |
Sync absent |
C562 22µ 250v |
|
Grundig |
CUC2030 |
Line collapse |
dry joint scan coil plug & R55006 5R6 1/2w o/c causing no E-W |
|
Grundig |
CUC7301 |
PSU rebuild |
Check mains smoother C626 47µ 385v or PSU may need rebuilding again |
|
Grundig |
CUC7301 |
Sound only - burst of line at sw on only |
Line osc at base of Line dr tr - nothing at collector. CT169 line osc buffer
BC858B sm faulty. Note - HT is 105v when set working but rises to 129v in st/by
or when non operational - normal? |
