Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

710 posts

Ultimate Geek

# 203133 19-Sep-2016 12:06
Send private message

Hi guys, hoping you can help me troubleshoot an issue i've been having with picture dropouts as well as random Hz changes between two devices.




TV Panasonic TH-P50U50Z


Panasonic PWT550GZ


Marantz 5010 AV receiver


My system is one HDMI cable from tv into monitor out of AV Receiver, AVR to Freeview box via HDMI. Picture has been dropping out as well as random HZ changes and half fuzzy or static looking pictures on freeview and blu ray disc playback. 


So far I've tried two brand new hdmi cables between freeview recorder - AVR, and I've also tried a different AVR which was a Denon X1000 both with the same result. After trying the different HDMI cables I took the freeview recorder back to Noel Leeming under warranty to get it checked out. They sent it away to a service agent who advises there is nothing wrong with it. NL are now charging me $60 + courier costs for the service fee. 




Having tried two different brand new HDMI cables, two different AVR's and different HDMI inputs on the AVR's. I've also replaced the HDMI cable between the TV and AVR. What else can I do? Please note that all my other connections to the AVR over HDMI work perfectly Apple TV, Xbox etc. 

Create new topic
553 posts

Ultimate Geek

  # 1635803 19-Sep-2016 12:33
Send private message

Tried different input on the TV?




Also there is another recent thread on here somewhere about Pana TVs and HDMI issues that would be worth checking out - I think its in the Freeview forum

3679 posts

Uber Geek

  # 1636022 19-Sep-2016 18:48
Send private message

What TV?


Is it HDCP 2.2 compatible?


Do you have Deep Colour turned on in the Panasonic Blu-ray recorder?


242 posts

Master Geek

  # 1636210 19-Sep-2016 22:27
Send private message

Number one rule with fault finding is Isolation.

First thing I would do is try and test the input of the TV, where for a start I'd connect the DVD player direct to the TV.

If this fails, change input,
If that fails, change cable,
If the TV fails on all inputs and combinations then,
Test devices on another TV or display if you can, this isolates the two components.
If the devices work on a 2nd display then the issue could be within the primary display.

If the DVD player works, then test the other individual components with the same procedure.

If all the devices work individually on the display, then add each device to the display, test each time one is added.
If at this point the display and devices cooperate then you can add to the AV unit.

First check that devices are set correctly, if you have options choose AUTO first, If you have HDCP options, select auto.
AUTO forces devices to send EDID data, manual settings in some cases limits interactions, but not always.

The order of operation can effect EDID transactions and syncing, typically the display should be the last device to be turned on, but sometimes the first, depends on all the devices that are being used.

Mixed settings can cause the display to be confused about what to do. AV units are not really that good when it comes to mixed setups. Sometimes a video scalar needs to be used to isolate multiple devices.

Force AV unit to pass through without scaling if you can.

As before start with the DVD player alone through the AV to the display.
If it works, then add another device. Test again

My guess is mixed messages from the devices to the display. Can be simply confused with 1080i verse 1080p. in this case it might require the AV to scale the inputs to a normalized output.

Some things to try.

Masterpiece Calibration Ltd, isf certified



"I'm not a robot!"

Create new topic

Twitter and LinkedIn »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Vodafone New Zealand starts two year partnership with LetsPlay.Live
Posted 28-Jan-2020 11:24

Ring launches indoor-only security camera
Posted 23-Jan-2020 17:26

New report findings will help schools implement the digital technologies curriculum content
Posted 23-Jan-2020 17:25

N4L to upgrade & support wireless internet inside schools
Posted 23-Jan-2020 17:22

Netflix releases 21 Studio Ghibli works
Posted 22-Jan-2020 11:42

Vodafone integrates eSIM into device and wearable roadmap
Posted 17-Jan-2020 09:45

Do you need this camera app? Group investigates privacy implications
Posted 16-Jan-2020 03:30

JBL launches headphones range designed for gaming
Posted 13-Jan-2020 09:59

Withings introduces ScanWatch wearable combining ECG and sleep apnea detection
Posted 9-Jan-2020 18:34

NZ Police releases public app
Posted 8-Jan-2020 11:43

Suunto 7 combine sports and smart features on new smartwatch generation
Posted 7-Jan-2020 16:06

Intel brings innovation with technology spanning the cloud, network, edge and PC
Posted 7-Jan-2020 15:54

AMD announces high performance desktop and ultrathin laptop processors
Posted 7-Jan-2020 15:42

AMD unveils four new desktop and mobile GPUs including AMD Radeon RX 5600
Posted 7-Jan-2020 15:32

Consolidation in video streaming market with Spark selling Lightbox to Sky
Posted 19-Dec-2019 09:09

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.