HOW TO REPAIR TOSHIBA TVs

Toshiba: 28W23B

Press "Menu", and enter digits [4-7-2-5]  The service menu window will be displayed.

Toshiba: 28W23B

Picture displacement.  Enter into service mode, as stated above.  By pressing Green Button on the remote control, select the option [VP-1] (Vertical Position).  Make necessary data value adjustments.

Toshiba: CF 3060K;

 Screen size problem.  Replace all capacitors in the vertical output section circuit.  There will be 5 or 6 of them.  Replace two 2.2MFd capacitors with good quality.

Toshiba: 175T9B;

Incorrect field lock when cold.  Horizontal instability.
Check the 47MFD capacitor [AGC coupling] ( inside the tuner/VIF) unit.

Toshiba: 2505DB:

 Frame collapse:
Repalce the diode fitted on the copper side of the printed circuit board. The diode (D570).

Toshiba: 198X6M:

 Horizontal output transistor blows off repetedely.
Repalce [C403 & C408].

Toshiba: 2573:

Do not come out from standby.
Repace ZP82.  If this do not help, replce tuner.  Tuner is defective. (internal short).

Toshiba: 28WD98B:

Do not come out frm standby.
Check the 16VDC line for low voltage.  Repalce C872 [220MFD 50V]

Toshiba: 2577B:

White horizontal lines.
Check all solder terminals to vertical output IC. [TA 8427k].  Resolder all the solder terminals, by applying fresh solder.

Toshiba: 215R8N:

Vertical distortion.  Elongated picture [top portion]
It will be best to repalce all the electrolytic capacitors in the vertical section.  Select capacitors with working temperature 105 degree C.

Toshiba: 219T9B:

Intermittent horizontal problem, after some hours of woring.
Replace the field output chip [AN5515] (IC 303).

Toshiba: 145R7B:

Dead.  No picture; no sound; no standby light.
Check power switching IC [STR50020].  Check and replace all diodes related to SMPS power supply circuit.

Toshiba: 210T6BZ:

Sound distortion.  Harh sound.
Check the voltage across 'C832'.  Be sure it to be below 25VDC.  Repalce Q809; C866; C896; C864.  Check for any dry solder terminals in the main power supply regualtor section.

Toshiba: 2550TB:

Do not come out from standby. Do not switch on.
IC TA8427K is faulty.  Repalce it.

Toshiba: 2857DB:

Horizontal instability.
Check for any loose or dry solder points at the terminals of regulator transistor [Q420]. This regulator transistor supplies voltage to frame generator IC.

Toshiba: CF 2666:

Screen with retrace lines, and non leanar structure. Might be too tall than normal.
Check C305(2.2MFD-50V). C342(1MFD50V).  These capacitors can be located very near to vertical output IC [IC-301].

Toshiba: 2863DB:

To fault find to this TV, the protection device [D471], must be desoldered out first.  It is a thyrister can located next to the SMPS transformer's secondary side.

Toshiba: AVM 2505:

Struck to standby. 
Check the 5 VDC power supply.  If it is OK, repalce the memory IC [IC A07] (Toshiba 23319016).

Toshiba: 3798DG:

Pin-cuschion distortion. [East West distortion].
Check and repalce diode D461 (ERC20-06).

Toshiba: 28W8DB:

Absensce of vertical (frame) drive; while sound and line drive is OK.
Check and replace the East West correction chip (TA1240). 

Toshiba: 217D98:

Field distortion.
Check and replace capacitor (C317) [2.2MFD-50V], in the leanearity section.

Toshiba: 2857DB:

No sound or snow on screen.  Only blue raster. Sound OK with SCART.
No sound.  Service mode window is inaccessable. No menu or text.

Repalce tuner.  It is faulty. [internal short].