i used all baud rates
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freeman3020
Member
Last Activity: 02-24-2022, 12:11 PM
Joined: 06-30-2019
Location: Ga
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Re: LC-32LE185M no led indicator
i used all baud rates
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Re: LC-32LE185M no led indicator
IR sensor , speakers
i connect usb to serial to service port , i got his MHDHg3e2u▒▒▒▒y▒▒▒
repeatly on port speed 115200Leave a comment:
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Re: LC-32LE185M no led indicator
the output of power supply only 12volt
all converters in main board...Leave a comment:
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LC-32LE185M no led indicator
Hi all
I have two sharp 32" tv LC-32LE185M with same problem after surge current , no power led "red" or "green"
I checked tv power supply it's supply 12 volt without problem, I checked power converter in main board , 5.0 and 1.2 and 3.3 volts is ok
I flashed Eeprom without new , i cant find service manual or schematic
any tips for solving problem?
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Re: Samsung HT-X250
I have found the problem in power supply no output from second transformer
35v i checked all diodes and zener there isnt problem and STR ic measured as diode between drain and source , so why pwm not workingLeave a comment:
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Re: Samsung HT-X250
Hi all did this problem solved , can anybody tell me zener locationLeave a comment:
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Re: LG OLED Screen protection remover
I replaced T-Con from working screen, same problem...Last edited by freeman3020; 09-13-2019, 07:46 AM.Leave a comment:
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LG OLED Screen protection remover
Hi all
I have 2 LG b8 OLED TV with problem of protection mode as i think , i realized that if i disconnect any cable from 4 ribbon cable of Panel , T-con will be in protection mode , so the the TV will not power on , i connected all panel cables and disconnect the bottom cable from main board to T-CON the TV power on with sound without any picture , but its mean main board is good, when connect all cables screen flicker white then off, relay on power supply click ,then off , its mean there is order to protect boards , how to remove this protection ,and let TV to work not perfect... -
Re: Samsung ps43E400 Plasma
no when disconnected y sustain vs also drop, i found on this forum on another post that vs will also drop, if disconnect y sustain on Samsung models...Leave a comment:
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Samsung ps43E400 Plasma
Hi
This TV have sound without picture ,the vs i got 218 then drop to 11, i removed y sustain board for inspection i dont find any short in diode or IGBT , i tested y sustain without Y-buffer by powered tv to see if voltage drop i got bomb in one of IGBT on y sustain board , is it problem to test y sustain without buffer board ???
Whats wrong hereLast edited by freeman3020; 08-01-2019, 07:31 AM. -
LG 50PQ10R Plasma Powersupply
Hi all
i have problem with power supply that not get 17V or va vs
firstly my power supply not get any output power i can get 4.5 volt for Microcontroller on the secondary side of AUX unit , i don't know how this microcontroller work so i pulled-up some pins to switch main power relay and trigger mosfet gate to get output , i can get 4.5 on 5v pin and 12 volt output , and switched relay to supply main power circuit , ic L6599D work for less than second then switch off , no short on any diode or capacitor
why microcontroller not switched circuit or relay... -
Re: Samsung 65MU7350 problem
i found the problem it's in COF one of its have burned point and disconnect quarter of Panel TAP and TV work , 3/4 of picture...Leave a comment:
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Re: Samsung 65MU7350 problem
sorry man ,but step by step we can understand us, don't be angry and sorry again , i will try again to put TV on standby mode , but is the service menu solve no picture problem????
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Re: Samsung 65MU7350 problem
sorry as i understand if i get TV on standby mode with cables connected then use my remote control by press info->menu->mute then power the TV will got picture??...Leave a comment:
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Re: Samsung 65MU7350 problem
sorry but i don't understand,, i disasmble power supply out and discharge capacitor , then plugged it on TV with all cable connected and switched TV on without picture so you mean now hold power switch for second to go to standby ????
whats next?????...Leave a comment:
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Re: Samsung 65MU7350 problem
i did as you told me discharge cap and connect main board TV switched on and stay on and can here sound but no picture , when switch off then on by remote its back to repeat booting
forum reduce resolution...Last edited by freeman3020; 07-02-2019, 03:15 PM.Leave a comment:
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Re: Samsung 65MU7350 problem
i tried more and more , TV not go to standby , only if disconnect screen two cables i can go to standby, then i tried , after connect cable TV power up and repeat restarting...Leave a comment:
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Re: Samsung 65MU7350 problem
i did as you said
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Last edited by freeman3020; 07-02-2019, 01:42 PM.Leave a comment:
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Re: Samsung 65MU7350 problem
these cables not disassembled before , but also i removed metal shield and checked no problems on any cap , and i plugged it again , same problem back light switch on and here start sound then restart without any picture on screen...Leave a comment:
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Re: Samsung 65MU7350 problem
i unplugged cables any wait 10 minutes ,, where is t-con on this board...Leave a comment:
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