Hitachi 57S715
I hear a relay click and DP40 and DP50 leds light then fade. I assume the tv is going into a shutdown. I monitored the secondary voltages and they all come up normally for a second before shutdown.
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Re: Hitachi 57S715
It was quite common for the convergence ic's to go bad, shorted. Try unpluging PPDC plug (has 3 large wires) from the convergence amp board, should be the board on the right with 2 large heatsinks on it. If the tv comes on with no convergence correction, teh stk*** ic's are bad, (only one is most likley bad but replace both) -
Re: Hitachi 57S715
I appreciate your response. I pulled the connector on the convergence board but still in shut down. Vertical IC next possibly?Comment
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Re: Hitachi 57S715
check dp32 bridge rectifier and cap cp03 for bad connections.
also does the power led on the front of the tv stay on?
also check the pico fuses, ep01 & ep02, but I think they will be ok.
I have'nt worked on one of these sets in a long time.Last edited by R_J; 04-23-2014, 09:30 PM.Comment
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Re: Hitachi 57S715
It has been a long time for me as well. Many a late night trying to figure shutdowns over the years.
Front panel led does not light up at all. I checked the items above for poor solder connections and the two fuses are good.Comment
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Re: Hitachi 57S715
I extracted the Power and Deflection schematic from the (32meg) manual it might help.Comment
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hi there,
Got this macbook after liquid damage. Nothing major, cleaned and reflowed what was suspect. Now, the laptop turns on and boots up but shuts off intermittently - sometimes after a few minutes, sometimes after a few hours.
Can be immediately started from keyboard right after. Plug stays orange during this time. No battery.
Gives shutdown cause -128.
Seem to work fine in SMC bypass.
Same shutdown happens with disconnected TP/KB/KBLED/CAM.
Observations:
- SMC_RESET_L - when pulled down - plug goes orange/green and... -
Chiedo aiuto per problema a TV Hitachi 32HE4500 che non si accende più,ho bisogno del firmware della scheda madre vestel 17MB211S codice pannello VES315UNVL-2D-N11 ?
spero che qualcuno può averlo per riprogrammare eprom. grazie
Post in English !!!
I ask for help with a problem with a Hitachi 32HE4500 TV that no longer turns on, do I need the firmware for the Vestel 17MB211S motherboard, panel code VES315UNVL-2D-N11? I hope someone can have it to reprogram eprom. Thank you
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hp fpw50-la-h323p rev 1.0
automatic shutdown after 30 sec of display coming
do not shutdown without ramstick
someone give me idea plz08-20-2024, 03:50 AM -
History
- Got TV free. Prior owner claims Vizio logo shows up then nothing. He found U202 EEPROM replacement info (I know NickTV says its never EEPROM haha). Lifted 5 pads removing U202 without proper tools and thought thats end of main board. Gave the TV to me.
- I repaired U202 pads and connections. Soldered on prior owner purchased aftermarket EEPROM (original EEPROM was tossed). TV boots to VIZIO logo, then goes blank, shutsdown after a min or so and power on light blinks a number of times.
- Fixed 2 circa 2015 Vizios before with classical main board... -
TV Model: Hitachi 40HYC42
Power Supply: 17IPS71
MainBoard: 17MB95M
Panel: VES400UNDS-2D-NO3
When the set came in it was dead. Fuse was open primary side and the power mosfet was shorted. So I ordered a new power supply. Now it turns on, only displays "Hitachi" and then power off red and blue led flashing.
I had to modify the 0ohm resistors in the led backlight of the new PS like the original power supply.
Is there any variants on 17IPS71 power supply's?
UART output pins 10 and 12 on scart connector:
...Code:12:24:04.595
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