| Make | Model | Problem | Solution | Date |
| | | |
| Found: 89
|
| Tatung | D4N | No sound or OSD - micro corrupt | fit link across 2 pins of PL701, ensure aerial is in, and power up.From H/set;Press Ch down 3 times
You are now in text mix mode, Adjust using vol+; Press TV button to store; Press Red Fastext button,
Adjust contrast using vol+; Press TV button to store; Switch off, remove link;
Sound,- Use menu to select balance, shift to left then to centre to reset sound | 14-09-04 |
| Tatung | D4N | No sync, col, OSG or Txt | Reset Micro as follows..SC Tags adjacent to micro, switch on & press CH down 5 times to select Mix mode, press V+ to restore colour level onText. Press TV on remote to restore, switch off and remove link.
Next time you switch on all should be restored. | 14-09-04 |
| Tatung | E | Goes into st/by aft 20 mins approx | R834 hi res (gives high HT) | 14-09-04 |
| Tatung | E & F series | Pulses at sw on 4 times then repeats | Check 180k bias resistors on crt base | 14-09-04 |
| Tatung | E series | Child lock removal | Press & hold "key symbol" button under sliding flap (can go into child lock if front controls not connected when switched on | 14-09-04 |
| Tatung | E series | Dead FS801 blackened | 2 x mains rects s/c, 10nf C805 split, R802 therm burnt | 14-09-04 |
| Tatung | E series | Only top half of pic showing | shorted turns L409 E-W loading coil had damaged IC401 TDA8350Q - replace both items | 14-09-04 |
| Tatung | E series | Service mode access | remove sk702 link, vol+ & - to step through.
brightness + & - to adjust levels.mute to store, replace link. | 14-09-04 |
| Tatung | E series | St/by only | check tr806 8v reg for no o/p - TIP31A | 14-09-04 |
| Tatung | E series | Tripping - High HT (170v instead of 150v) | R814 75k 0.6w hi res also check IC801 | 14-09-04 |
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| Tatung | E series | When replacing FOP chip IC401 TDA8350Q | Mod for improved reliability - fit 33v 1.3w zener to IC401 pin 11(+) & chassis; On PE1N,PE1W,PE1PNandPE1GS chassis alter the following....
Replace C406 470nf with 100nf 100v replace R105 47ohm 2w with 18 ohm 2w metal oxide, add 100nf 100v across C405 | 14-09-04 |
| Tatung | E series T28NE51 | Bright screen - int | PL902 on crt base hard wired | 14-09-04 |
| Tatung | E series V25NEFO | Flashing LED/pumpimg noise I st/by - ok when ON | Pin 10 IC701 ST6385 micro pulsing instead of low for on , high for off. TR801 BF422 in controll cct pri of psu leaky | 14-09-04 |
| Tatung | E1 | Field - top foldover | TDA8350Q fop chip | 14-09-04 |
| Tatung | E1N chassis | blank raster, OSD Ok | IC302 gets hot, 8V rail high at 12-13V. ZD821 not fitted correctly, solder in ZD821 and replace IC302 TDA5115 | 14-09-04 |
| Tatung | E1W chassis | blank raster, OSD Ok | IC302 gets hot, 8V rail high at 12-13V. ZD821 not fitted correctly, solder in ZD821 and replace IC302 TDA5115 | 14-09-04 |
| Tatung | F | Int blue screen, no tuning or sound Chan nos present | Fit nut & bolt thro' earthing rivets on main heatsink | 14-09-04 |
| Tatung | F series | Comes on with no G then reverts to prot mode - dead with st/by LED flashing | R913 o/c, R922, R903 hi res (all 180k on crt base) | 14-09-04 |
| Tatung | F series | Dead - PSU blown up | Fit Tatung PSU repair kit, but also change Q803 BF423 error amp Tr or will blow again. Initially caused by dry joints T802, T401 & degaus positor | 14-09-04 |
| Tatung | F series | Int remains in st/by with squeal | R812 & C807 sm by edge of chassis never been soldered | 14-09-04 |
| Tatung | F series | No video and shuts down after 20 secs, led flashing 4 times repeatedly. | R909 180K in blue drive cct. | 14-09-04 |
| Tatung | F series | Pic & OSD goes dark aft few mins | Check 3 x 180k res on crt base - R909, 913 & 922 | 14-09-04 |
| Tatung | F series | Sound, OSD but no pic - goes to st/by aft 10 secs with LED flashing 4 times | replace R909, R913 & R922 all 180k`s, ALL o/c | 14-09-04 |
| Tatung | F series | Trips 4 times then shutdown | check 180k bias resistors & D901/910 for s/c on crt base | 14-09-04 |
| Tatung | F series | Trips with excess HT up to 180v | Replace Chopper Tr, LOPTx, 130v avalanche diode & R814 0R39 | 14-09-04 |
| Tatung | F Series V14RFG1G | Blank raster at switch on OSG ok .Then goes to trip mode. Leds flash 4 times in a cycle | Replace R909.R913.R922 all 180k on CRT base board. | 14-09-04 |
| Tatung | G series T28NG80S | Dead - LOPTr s/c & replacement soon goes the same way | C407 9.1nF 1.6KV - it's value had fallen to 5nF. | 14-09-04 |
| Tatung | T20TD50 | Txt - pic remains in background when selected | Check pin 19 SAA5244P Txt chip - should be hi in txt, low in pic - ok but D304 BAT85 o/c | 14-09-04 |
| Tatung | T20TK70 | To access special features | hold in menu (i) key on set while powering up until the on-screen bargraph appears, then, press the rcu teletext index key twice. Within this menu select the feature with the prog +/- keys and alter the status of each with the vol +/- keys. The features available are......Tuning lock, Volume limit, Local control key
lock, Initial program number and Power on control. | 14-09-04 |
| Tatung | T21TD60 | No line drive | R427 o/c, Tr402 s/c | 14-09-04 |