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

3594 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 »

Microsoft New Zealand Partner Awards results
Posted 18-Oct-2019 10:18

Logitech introduces new Made for Google keyboard and mouse devices
Posted 16-Oct-2019 13:36

MATTR launches to accelerate decentralised identity
Posted 16-Oct-2019 10:28

Vodafone X-Squad powers up for customers
Posted 16-Oct-2019 08:15

D Link ANZ launches EXO Smart Mesh Wi Fi Routers with McAfee protection
Posted 15-Oct-2019 11:31

Major Japanese retailer partners with smart New Zealand technology IMAGR
Posted 14-Oct-2019 10:29

Ola pioneers one-time passcode feature to fight rideshare fraud
Posted 14-Oct-2019 10:24

Spark Sport new home of NZC matches from 2020
Posted 10-Oct-2019 09:59

Meet Nola, Noel Leeming's new digital employee
Posted 4-Oct-2019 08:07

Registrations for Sprout Accelerator open for 2020 season
Posted 4-Oct-2019 08:02

Teletrac Navman welcomes AI tech leader Jens Meggers as new President
Posted 4-Oct-2019 07:41

Vodafone makes voice of 4G (VoLTE) official
Posted 4-Oct-2019 07:36

2degrees Reaches Milestone of 100,000 Broadband Customers
Posted 1-Oct-2019 09:17

Nokia 1 Plus available in New Zealand from 2nd October
Posted 30-Sep-2019 17:46

Ola integrates Apple Pay as payment method in New Zealand
Posted 25-Sep-2019 09:51

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.