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LCD TV forum / Re: hitachi 42hxt12uhi
« Last post by t1412 on January 03, 2023,15:16:40 »all sorted thanks
Recent Posts
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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
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
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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DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: Panasonic DMR-ES30V vcr no power
« Last post by djkrasikn on November 27, 2022,07:59:39 »IC7402
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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 27, 2022,07:58:01 »From the picture IC6302 pin 3 /on/ should turn it on, but I don't know where to look for it.
The ones in the picture refer to IC3002; QR4501; IC3906; IC7402 I measured the voltages when assembled and switched on
IC3002 pin 1 measured input 1.68 volts, pin 5 output 0.03 volts per case
IC3906 pin 1 measured input 5 volts, pin 5 output 4.7 volts per case
IC7402 pin 1 measured input 0.17 volts, pin 5 output 0.03 volts per case
QR4501 in one place is 12 and in the other two 0 per case
The ones in the picture refer to IC3002; QR4501; IC3906; IC7402 I measured the voltages when assembled and switched on
IC3002 pin 1 measured input 1.68 volts, pin 5 output 0.03 volts per case
IC3906 pin 1 measured input 5 volts, pin 5 output 4.7 volts per case
IC7402 pin 1 measured input 0.17 volts, pin 5 output 0.03 volts per case
QR4501 in one place is 12 and in the other two 0 per case
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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 27, 2022,04:11:33 »What happens if you short IC6302 input (5.8V) to its output? Does the VCR function then? The videos tell me little that's useful.