Toshiba Repair Tips

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Results: 5592

Make	Model	Symptom	Problem	Solution	By
TOSHIBA	CM7235CD	Micro system toshiba cm7235cd transformer burning	Toshiba micro system model cm7235cd with the power transformer completely shorted. Without the schematic, I tested the rectifier diodes and the output IC. As I didn't find anything wrong, I had it rolled up (it doesn't exist for replacement). I paid 55.00 for the service and as soon as I called it, smoke rose and the tranco fried immediately. I thought the winder had done something wrong to the primary wires and went back tsound. As he had another similar one already ready, he handed it to me right away and assured that what would have burned was a short in the secondary due to the condition of the external coil. now carefully, I first connected the power supply to the transformer...everything was normal...the secondary one has two plugs...I plugged in the 4-wire one first and it got hot right away. I went to check and the rc2 ceramic disc capacitor (47 nf) was completely shorted at the input of the diodes. problem solved. As it is difficult to find it, I wrote down the values of the transformer in case anyone needs it: primary black/red 19Ω red/white 59Ω. the secondary has 5 separate windings: voltages measured (a) with the secondary unplugged from the circuit and (b) with the device operating at medium volume and radio function. blue/blue 2.2Ω (a)22.4vac (b)21.5vac red/red1.0Ω (a)16.5vac (b)16.2vac white/white1.4Ω (a)5.2vac (b)4 .7vac brown/brown 9Ω (a) 32.7vac (b)32.0vac gray/gray2.2Ω (a)19.1vac (b)18.4vac		littlecarlos
TOSHIBA	TV-2998EMS	Tv-2998ems turning off in less than 3 minutes	Tv-2998ems was turning off, always less than 3 minutes after the image appeared. If I tried to turn it on, it wouldn't respond to the command, unless it was left unplugged by those classic 4s. defect c448 (33μfx160v) completely exhausted. on the capacimeter it was measuring just 2.9nf.		littlecarlos
TOSHIBA	2987IMS LEM5	TV turning off after turning on...reduced vertical	Toshiba tv model tv2987ims chassis lem5 turned on and the image appeared flattened at the top and folded. at the same time it turned off. One detail is that tsound was no need to wait for those 4s. All you had to do was turn on the power and it would turn back on and repeat the problem. the 130v line was normal (it read 129.5v). the 27v line was only showing 23v, after testing the components on that line they were normal, so I replaced the q301 (tda9309) and the TV started working again, but still with the bending, which returned to normal after a few minutes. So it was just a matter of changing the c308 (100μfx35v) which showed normal on the capacimeter but was the cause of the bending.		littlecarlos
TOSHIBA	TV2015MM U17	Switched power supply does not oscillate, no secondary voltage	C881 of 0.1 mf		Lecram
TOSHIBA	TV-2079FMS U11 U11	Dark screen	R447		NUNO RJ
TOSHIBA	TS-209CR	Vertical oscillating	C304
TOSHIBA	TV1483-U10 U10	No contrast	C446
TOSHIBA	TV1490 U14 U14	Turns off after +/- 30 minutes	Replace q405, q430, q422, q840		Andrade Sequeira
TOSHIBA	142 VS	01- channel change keys do not work and no characters. osd	Defective keys and cold soldering on the computer	Replacing keys and resoldering micro and PCI pins	Eli
TOSHIBA	TV 2087 H U 13	Closed vertical, heating power supply resistor. follow flyback pin 6	Diode and vertical output shorted	Changing the diode and vertical output IC.	Eli
SEMP TOSHIBA	TV 2091 U14	Horizontal output shorted	Replace of q402, and a change in the horizontal circuit		miguelito
TOSHIBA	2088-IM	Stays in std.by	Check c887, replace r840 of 3.6 with 2k2
TOSHIBA	2998DS-LEM	Does not tune channels	Ic 501 tb1231cn ou tb1238
TOSHIBA	TV-2091 U15	Does not oscillate	R411
TOSHIBA	2083FAV-U11	Greenish with lines of retraces	R227 aberto smd-22k		Iracy-RJ
TOSHIBA	TV1485-FM	Volume does not act beyond the fourth indicator dash and menu only accesses the first options screen	Smd memory		Renaldo
TOSHIBA	U11 U11	With sound, no image, no characters, blue screen	D901
TOSHIBA	TV-2998EMS LEM2	When turned on tsound is no synchronization, it normalizes after a few minutes	C213, c214
TOSHIBA	TV -2090IAV U14	Dead	Of 840
TOSHIBA	2998	Tv inoperative acting protection	Q-301-tda 9309, raah d ar/or		Andrade Sequeira