can anyone help? I an trying to get the part number for two diodes in this model hitachi. I need p/n for d110 and d156 or replacement p/n's. Thanks in advance.
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Re: hitachi CMP4202E
Post a good clear picture of the board they are on and a close up of the area
where they are and a close up of the two itemsLast edited by selldoor; 04-26-2012, 09:32 AM.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: hitachi CMP4202E
service manual here with psu schemo
http://www.eserviceinfo.com/download..._CMP4202E.htmlMost of the time things ain't what they seem to beComment
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Re: hitachi CMP4202E
Finally got this set to work. After many hours of troubleshooting, it turned out to be bad caps everwhere! Y sustain, Z sustain, powersupply and Logic boards. Installed some good caps and this tv is now working really well. Thanks again for all the great help!!!Comment
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Hi. I need help from wiser guys. I am amateur in electronics and can't figure this out by myself.
I bought faulty speakers, M-Audio AV40's. Other speaker has all the electronics in it and the other speaker is just passive one powered by the other speaker's amp. Original problem with the speakers was loud buzzing. I figured out that there is something wrong with the capacitors. I went ahead and replaced every electrolytic capacitor on the PCB. The caps are good quality and have the same values as the original ones.
After replacing the caps I started testing out the speaker. It seemed...09-10-2025, 10:20 AM -
Dear members,
I have a linear variable power supply with unknown brand name that I used for voltage injection.
Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
In addition, I discovered that its zener diodes are defective.
I can replace the burned transistors.
But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
Therefore, I cannot replace the zener diodes.
I do not want to test the zener diodes in a test circuit to discover their model or value.
no schematics are available... -
Hitachi 32HAE2351 Vestel 17MB171 - Rotate Image
Mainboard: VESTEL 17MB171 Chassis: VES315WNGB - 2D - N52
The TV was stuck on the logo and I couldn't access the update menu.
I couldn't find the firmware for the Hitachi 32HAE2351 and updated it with the Toshiba 32WA2063DG - Vestel 17MB171 firmware.
The image result was good, but the image is inverted.
The image rotation/mirror function doesn't exist in the Menu Server. I can't correct the image.
Do you have the firmware for the Hitachi 32HAE2351 - Vestel 17MB171 motherboard or a solution to rotate the image in... -
hi
i have the above tv and the display starts distorts the display at only in applications like you tube
after and on the didital channels
now without connect the antenna only the image of itsselfs tv i have the image i have in attach
i have read in another forum someone else with similar problem with mine changes tcon card and motherboard and the problem remains
can you tell me someone what is the reason that can causes that problem ? is the same the sisplay ?... -
Hi folks. As the title says, I was doing a port replacement on a Lenovo Thinkpad T480s and in the process of post-solder cleaning, I somehow knocked off 2 or 3 diodes (i think they are diodes) near the main usb-c. I can't seem to find what kind of a diode is that. I know it's ultra tiny and just has a letter "G" on it. Would someone maybe have a proper schematic for the t480s model? I can only find the non-s one and it's quite different to the "s". Would love to figure out what component that is.
Thanks in advance!...
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