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Z42pq2-uc hdmi not working

HDMI connection on the TV is not working. I've read we will need to replace the main board. is this hard to do?

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Depending on complete model# the pt # varies & price varies between $80.00 & $100.00
See the following link:
http://www.shopjimmy.com/zenith?master_part_type=Main+Board&q=Zenith&tv_brands_select=Zenith&tv_models=Zenith+Z42PQ20-UC

Posted on May 09, 2014

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What board/part do I need to replace the only HDMI port HDMI (19 pin HDMI Type A) on a Panasonic TH-42PD50U EDTV.


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

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Unfortunately, you fried the HDMI controller. Not necessarily part of the power supply "main board." (Not sure which board is the HDMI controller in your specific TV. It's usually a separate board by itself). Easiest workaround is to use the "Component" cable connectors. The downside is you only get 720P. However, most cable/satellite and _all_ antenna signals are only 720P anyway. Most people only see 1080P when viewing Blu-Ray discs. Aside from replacing the HDMI controller, the cheapest workaround for multiple source connections is to buy an HDMI to Component Converter A/V box, which allows you to connect multiple devices to one box with one set of Component cables connecting to the TV. Then select various "sources" via the box.

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If sound on one HDMI and not the others---all three should go to the same board--either something is not connected inside or the replacement board is the issue---Samsung is known for making boards with the same part number on them that from week to week have different features or do not have certain features.

Try to trace where the working input goes and if to same board as other two you know what to suspect.

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1 Answer

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The best way to repair this problem is to replace the main signal board. The HDMI connections on the board may of come loose but replacing the board is the best solution at this point.

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1 Answer

Both HDMI ports are bad due to lightening strikes. What do I need to do to fix this? Can you suggest part numbers?


The main tv Tuner signal board have problems and all those HDMI insert ports are shorted dead,those HDMI insert ports are put on by wave soldering machine and fused by iron core solders joints to the main tv Tuner board itself.These HDMI insert ports are not replaceable by hand soldering equipments or can buy those HDMI insert ports individually anyway.Tv still work wright?Yes? Why don't u just skips the used of those HDMI insert ports all together and tries used those RCA component cable connections like AV1 and AV2 on the tv.Or u must have some mechanicals skills and like take things aparts and putting back together again?Yes?Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv main Tuner signal board for the replacement to able to used those HDMI insert ports again.I have the same problems with my Samasung 46" all my HDMI insert ports are dead too,but the tv still functions.That what i did used RCA cable components connections for my cable box and blu Ray player.

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No,the HDMI connections hubs are just a few small components parts that was put on by the wave soldering machine and it is on and surface mounted by soldering fussion to the tv to main tv Tuner signal board and funsction as one board,can't replaces these HDMI hubs by itself,it very hard and almost imposible to do so by hand soldering equipments and these HDMI components hubs they don't sell out as individual consumer parts any way.Tries tv unplug,replug it back like about and hour later for the tv to do a resetting itself back to the factory setting.Than go to the tv menu go to PICTURE setting go down to do a resetting to do a resetting to all the funsctions of the tv Tuner signal board.Now all ur HDMI hubs should be working again.If not,the whole Tv Tuner signal board mut be reolaced.Try website like Ebay.com to buy a whole refurbish main tv Tuner signal board for the replacement.

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HI:
You need to replace the analog board assembly, this is the board that you plug connections into, seems the HDMI port has malfunctioned, there may also be a problem with the main board assembly that the analog board connects to.

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1 Answer

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Try new hdmi cable. Try different inpus on set. Try another known good signal source to determine is tv or souce device if at fault. If aother hdmi connector on set ok then replace main brd in tv, if none of the hdmi inputs work even with known good cable and known good signal sourse the replace main board in tv

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