itronic
Senior Member
Last Activity: 04-16-2025, 10:42 AM
Joined: 09-03-2015
Location: east
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Even though its shows it on the label. It doesn't produce the 5vdc voltage -
UPDATE. TV IS WORKING FIND NOW.
Tv is power on and working. voltage is steady
VOLTAGE READINGs
THE 4 DIODES READING:
D203 =135DCV
D206= 135DCV
D205=270DCV
D204=270DCV
Big Caps 382v
led 115v on each
CON201
ADJ- 2.27VDC
BK- 3.02VDC
PSON- 3.32VDC
+12V- 12VDC
REPLACED:
R355,R002,C338,EC210,EC201
THANKS FOR THE HELP [B][URL="https://www.badcaps.net/member/71977-nomoresonys"][B][U][COLOR=#006600]nomoresonys[/COLOR][/U][/B][/URL][/B] AND...Last edited by itronic; 12-09-2023, 10:17 AM. -
I manually put 5vdc to ADJ, BK, PSON. Plug power in and backlights will blink and go back off....Leave a comment:
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This board don't have 5Vbs. Well it don’t produce 5vdc....
Last edited by itronic; 12-08-2023, 05:07 PM.Leave a comment:
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Results from following test:
4 diodes- D203-D206= .398 they all read same. good
2 blue caps :C338=202PF(replaced with 221pf) good now. C133= 102PF (GOOD)
EC210- 5UF REPLACED- READING IS 10UF NOW.
EC201 - (448UF) REPLACED -READING IS 470UF NOW.
VOLTAGE READINGS.
BEFORE CHANGED THE 4 DIODES READING:
D203 =5DCV
D206= 5DCV
D205=320DCV
D204=320DCV
VOLTAGE READINGS.
AFTER PARTS REPLACED, THE 4 DIODES READING:
D203 =25-45DCV- FLUCTUATING
D206= 25-45DCV FLUCTUATING
D205=320DCV
D204=320DCV...Leave a comment:
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Thanks . Already replaced the LED Capacitor (EC210).Will test furtherLeave a comment:
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Leads placement:
black on frame ground
red on BK connection
voltage is .1vdc in standyby
pushing power switch they are no change in any voltage...Leave a comment:
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First test:
Leads placement:
black on frame ground
red on bk connection
voltage is .1vdc in standyby
red lead on pson
voltage is 2.0vdc to 2.5vdc it flucuates in standby
pushing power switch they are no change in any voltage
Second test:
Leads placement:
black on bk
red on pson
voltage is 2.0vdc to 2.5vdc. it flucuates. in standby
pushing power switch they are no change in any voltage
Leave a comment:
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ONN 70 INCH. Model 100068378Leave a comment:
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Voltages on PSU board with main board and led disconnected:
3 large main caps - 380v DC
CON201
GND
ADJ -
BK -
+5V - Not Connected
PSON -
+5VSB - Not Connected
NC - Not Connected
ND - Not Connected
GND
GND
GND
+12V - 11v
+12V - 11vLeave a comment:
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PSU TEST ON TV7001-ZC02-01 BOARD
Just reaching out. Anyone know how to test PSU without main board . Trying to test backlights....Last edited by itronic; 12-06-2023, 05:02 PM. -
Re: Samsung UN70TU7000BXZA
Thanks for the help. Has a line but works ....Leave a comment:
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Re: Samsung UN70TU7000BXZA
Thanks did that. It had a line on screen. but watchable. Thanks for the help....Leave a comment:
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Re: Samsung UN70TU7000BXZA
I found the exact pin that coming of mainboard to flex cable. Its pin number 81. Tape and the tv stays on but no image but has backlight, but does have sound. If i unhook left buffer board (looking from back) and have pin 81 tape, still no image but has backlight and sound. So they something checking each pin to let image come up im guessing....Leave a comment:
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Re: Samsung UN70TU7000BXZA
it burnt the flex bond cable and shorted out the pins in the flex bond cable going directly into the lcd itself. can them be fixed....Leave a comment:
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Re: Samsung UN70TU7000BXZA
Okay thanks. Only problem is this tv don’t have a t-con board. Don’t really show the clk connection to bypass them. I’ll send picture of the main board cable connection. Also connection at main buffer board. Last 2 pic is the main board connection. Tape the pins and the marks but didn’t work....Last edited by itronic; 11-13-2022, 08:52 AM.Leave a comment:
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Re: Samsung UN70TU7000BXZA
Any idea on which pins to bypass. We’re they no t-con board. I’m
CluelessLeave a comment:
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Re: Samsung UN70TU7000BXZA
It worked fine, just 3/4 if screen showing. Are they any way to bypass it to show whole screen. Reckon the tape method would work?Leave a comment:
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Re: Samsung UN70TU7000BXZA
Thanks Nomoresonys and Diif for the response.Leave a comment:
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Re: Samsung UN70TU7000BXZA
After removing the ESDProtector, I Tested and it read good. So put meter on the TP6 and TP13. It would short out every time I pushed in on ribbon cable. So after looking, it was hit with water damaged. Cleaned it and took pic. Time to recycle now lol.Leave a comment:
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