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LCD TV forum / Re: Hisense
« Last post by call me al on January 19, 2023,12:47:44  »
Many thanks for the reply ,am inclined to agree ,think its a Hisense thing,have,nt came across it with any other brand
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LCD TV forum / Re: Hisense
« Last post by downunder on January 19, 2023,03:58:50  »

Hi Al, and all the best for the new year.  Have you considered it might be the display panel? Try disconnecting separately each T-con flexie lead to
the panel. If one lead off gives you half a picture or white screen, but the other lead results in a black screen, then the panel is toast. This is mere speculation of course, but at no previous time have I come across so many duff panels.
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LCD TV forum / Hisense
« Last post by call me al on January 18, 2023,14:30:36  »
Hi all .Best wishes for2023,have a Hisense H49n5700 it keeps cutting off sometimes after a few mins and other times after  much longer.Have replaced the main board but fault still there,also took it apart to check the led strips and re wired the edge connectors on the led strips but still no better.Have run out of ideas so any suggestions very welcome.Thanks Al
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LCD TV forum / Re: hitachi 42hxt12uhi
« Last post by t1412 on January 03, 2023,15:16:40  »
all sorted thanks
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LCD TV forum / Re: JVC LT-40C890 & 40C750 no pic but not leds
« Last post by sinclairtv on December 31, 2022,08:42:36  »
Toshiba 43U5863 had the same problem. I scraped connections and even soldered over them but no difference so had to rewire. Read about 15 ohms. 3 leds away so had to replace strips as well.
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LCD TV forum / hitachi 42hxt12uhi
« Last post by t1412 on December 25, 2022,16:27:53  »
hi merry xmas, all  does anyone have firmware update for mainboard 17mb95, hitachi 42htx12u thanks

shaun
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DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: Panasonic DMR-ES30V vcr no power
« Last post by djkrasikn on December 05, 2022,08:10:39  »
I will order the part and when I replace it I will write. Happy Holidays!
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DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: Panasonic DMR-ES30V vcr no power
« Last post by downunder on November 30, 2022,03:52:16  »

Well, at least we livened up the forum for a while.
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DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: Panasonic DMR-ES30V vcr no power
« Last post by djkrasikn on November 29, 2022,13:23:13  »
I removed the chip but I can't find such an IC 6001 M37761vlve-1
I don't know where to buy
this one is similar but it won't happen for sure
https://www.aliexpress.com/item/1005002778857085.html?gatewayAdapt=4itemAdapt
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DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: Panasonic DMR-ES30V vcr no power
« Last post by downunder on November 28, 2022,01:59:34  »

IC3002 + IC3906: Input pin is 8 = 5.8V, Output pin is 1 = 5V, On/Off Switching pin is 5 = high . This is the same in all modes i.e Play, Stop, Rec.

IC3906: Input pin is 4 =5.8V, Output pin is 1 = 5V, On/Off is pin 3 = 4.6V in all modes.

QR4501 has 4.6V on the base only in all modes.

The service manual does have a voltage chart for all ICs .

I suspect it all comes back to Micro IC6001 not supplying switch-on volts from pin 75 to IC6302. I wouldn't attempt to remove the micro but with an injection of soldering flux under it and judicious application of a heat gun to the top of the IC you might get sufficient solder flow at the ball joints to remake any poor contact.
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