Re: Hitachi Power LED flashing
Hi
the capacitor circled in blue is rated at 100v
the capacitor with the red mark on is rated at 50v
Unfortunately I have just powered it up to see if I can make out any sign of life on the display and with a light shining on it and the input list was just about visible with the light in the right place but I have also noticed that the panel is broken so no go. I am not sure how long the people that brought it to me had been carrying it in there car.
Thanks for your help
Mick
mick4555
Member
Last Activity: 04-19-2024, 12:32 PM
Joined: 11-24-2008
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Re: Hitachi Power LED flashing
hi
It shows 62-63v on both ends of D6 yes I tried the diodes in diode mode and they seem ok. The IC is on the back of the board so not very easy to get at.
Looks like I will be trying to dismantle the display tomorrow not the best job going.
Thanks MickLeave a comment:
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Re: Hitachi Power LED flashing
sorry got it wrong after checking again the 62v does get to the led backlight connector I was checking the wrong side (red wire) then the return goes to
an ic MP3398A but they are not turning on so looks like backlight issue.
ThanksLeave a comment:
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Re: Hitachi Power LED flashing
Hi sorry it sound like there is some confusion arising. The led that is flashing is the standby led on the front panel. The 62v reading is at the c55 capacitor I have now managed to unstick it from the board and it is only rated 50v. I have checked the big diodes on the top off the board and they all seem ok.
The outlet for the backlight led only shows about 7v which drops off to nothing very quick....Leave a comment:
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Re: Hitachi Power LED flashing
Hi
I have just checked the voltages on either side of Diodes D23 D24 D25 and its showing 26v-28v ac on one side and 62v dc 0n the other of each oneLeave a comment:
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Re: Hitachi Power LED flashing
Hi
I have rechecked the capacitor with leads connected to both the leads of the capacitor marked in the picture with 3 meters and it shows 42v on standby and 62 power on.
The capacitor is stuck down so cant read the rating on it but it sounds like major problems
Thanks
MickLeave a comment:
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Re: Hitachi Power LED flashing
hi
Checked pin 3 it goes from 3.26v in standby to 0.06v power on
Voltage across c55 is 42v standby and 62v power on
Looks like the diagram of pins is upside down pin 1 is at the bottom
Thanks
MickLeave a comment:
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Re: Hitachi Power LED flashing
Hi
I have tried to look into things a bit further and actually manage to get a universal remote to switch it on and of but still no go. I have found now that the Standby led flashes 12 time when you pwer it of before standby.
The voltages bet the powerboard and mainboard I have tried to show on the diagram in the pins image.
Also I found that the voltage to the backlight led seems to be at about 0.5 while in standby and the goes upto about 5v and slowly dropping off when powered on....Leave a comment:
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Hitachi Power LED flashing
HITACHI 32HB26T61U Smart TV
When plugged in the power LED flashes 8 times and then nothing so I presume thats an error code but I cannot find anything on the internet about it so I am hoping that somebody on here can help.
Board No,s
17MB211S
IPS62
Thank YouLast edited by mick4555; 01-04-2021, 02:59 PM. -
Re: Acer AL1917 smoking
The 3 inline with it are 30J 3KV and I think the one between the transformers has got a 30 and a 6 on it difficult to see it with the glue on it and the last on I can't see any numbers on.
The burnt one seems smaller in size than the 30J 3KV onesLeave a comment:
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Acer AL1917 smoking
Monitor: Acer AL1917 sm
Inverter/power supply board DAC-19M001A Rev 1F
This monitor was working and started to smoke so it was unplugged immediately. When I dismantled it I found a burnt component which I think was a capacitor, marked in the picture. So I was wondering if anyone might know what rating it was, and also whether replacing this will rectify it or if there are other components that may also be damaged....
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