Welcome to GOFASTMOTORSPORTS.com ... ... ... Green Flag - Green Flag - Go Go Go ... ... Brought to you by Ricks Satellite - Where the Big Dish Rules!

Ricks Satellite Wildfeed and Backhaul Forum
Register Latest Topics
 
 
 


Reply
  Author   Comment  
Captain_Kurtz

Registered:
Posts: 2,629
Reply with quote  #1 
Has anyone had this problem with their AZ Box before?
Mine is an AZ Box Premium HD+ model.
Last night during SNF the picture froze (but the GUI was still responsive), so I used the remote to reboot the system, and now the picture has the awful herringbone pattern seen below. I tried doing a hard reboot (power cycle), and that didn't help.
The fan still works, and the receiver wasn't overheated. I left it powered off overnight, and this morning the problem is still there.
I used the GUI to do a screen capture, and once I remove the hard drive and hook it to the computer, I will see if the screen capture shows the problem too.
(The picture below was taken with my cell phone aimed at the TV.)
I plan to re-cap (replace all the electrolytics) and replace the fan, and hope that fixes it.
However, does anyone know if there is a specific fix for this, other than a noisy power supply due to bad caps, that is causing the issue?
BTW, I also tried swapping HDMI cables with my Roku, and the problem followed the receiver, so it's not a bad cable or bad input on my HT receiver.
TIA.

20161219_103947.jpg

Hunter

Registered:
Posts: 123
Reply with quote  #2 
Have you confirmed you are set to NTSC and not PAL format?
EmilNJ

Avatar / Picture

Moderator
Registered:
Posts: 3,662
Reply with quote  #3 
I would back up you sat/channel list and then reload the firmware.  Make sure to format the area first and then load the firmware again.   It just may be that the firmware got corrupted.  If not then at least you know for sure its a hardware issue.

Emil

__________________
Icecrypt 1600 CHD SE, Icecrypt 3750 CHD, Linkbox 9000i Local, Wetek Play, SYNOQ SR1, 2 AZBOX ME's, AZBOX Premium Plus & Elite HD, Manhattan RS1933, Openbox S10, Vantage HD1100S, Prof 7500, Pansat 9200HD w/S2+board, 2 Quali-TV's, Sonicview 8000HD, Toshiba TRX 2220, Motorola DSR905, 10ft Winegard, 90cm Ariza, etc.......
majortom

Avatar / Picture

Registered:
Posts: 5,144
Reply with quote  #4 
My vague recollection of a "herringbone pattern" on a TV was always in reference to horizontal / diagonal lines running through the picture, typically caused by external interference, not vertical lines running down... But of course that's from recollection of an analog system..

Do you have an oscilliscope handy? That would tell you right away if there was any 'trash' riding on any DC rails.
I know you said the gui menus looked fine, but did you also try connecting the HDMI cable and / or Y /Cb / Cr Component outputs directly from STB to your TV, further eliminating the Home Theater receiver from the equation?


__________________
Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html
Captain_Kurtz

Registered:
Posts: 2,629
Reply with quote  #5 
Quote:
Have you confirmed you are set to NTSC and not PAL format?


Quote:
I would back up you sat/channel list and then reload the firmware.  Make sure to format the area first and then load the firmware again.   It just may be that the firmware got corrupted.


Good ideas, and thank you for the suggestions, but the menues are way too blurry to be able to see what I am doing to try to reload the firmware, and it doesn't appear to be a PAL issue, but I will keep that in mind. I think I found the hardware problem - more below.

Quote:
My vague recollection of a "herringbone pattern" on a TV was.....


Yeah, I didn't mean that specific type of interference which IIRC was caused by ground loops, I meant it in the more generic sense of the term "herringbone pattern", which is a zig-zag type pattern, the way bricks are stacked. It looks like everyone was sliced horizontally in a few hundred places by a giant cheese slicer and the layers are no longer aligned. Like a really bad (or no) de-interlacer.

Quote:
Do you have an oscilliscope handy?


Unfortunately no, not here. I have looked at a Tektronix 2215A that boblop recommended in another thread some months ago, from a seller on ebay. It's a really nice, basic 60MHz analog dual-channel scope, but for $300 I have to think about spending a little more and getting a nice DSO instead.

Anyway, I opened up the AZBox to remove the hard drive, and went ahead and removed the top cover too and had a look at the electrolytic capacitors. The first one that caught my eye was part CE9, a surface-mount 220uF 35V unit that is obviously in distress - the top is pushed up - and, surprise, it's right behind the HDMI jack and next to a Silicon Image SiL9134CTU chip, which a quick google search confirmed is a "HDMI 1.3 Transmitter with Deep Color, High Bit-Rate HD Audio Support". There is another, smaller
surface-mount 470uF 16V unit nearby, part CE5 that also looks suspect, plus about a half dozen through-hole capacitors in the area that look fine, but I will go ahead and replace to be sure.
I have a Parasound HCA-1000 stereo power amp that I need to re-cap anyway, so I will just add the parts for the AZBox onto the order for the parts for the amp, from Mouser. I need to work up a parts list for the amp, and also open up the AZBox power supply module first, before I order.
Here is a picture of the HDMI driver chip and the caps - CE9 is the round silver cap at the top middle, and CE5 is in the top left. You can't really see it in the picture, but the top of CE9 is bulging.

Thanks again for the help.

20161219_222058.jpg 

majortom

Avatar / Picture

Registered:
Posts: 5,144
Reply with quote  #6 
Nice, hopefully that is all that's wrong. Feelin good about it now though...
__________________
Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html
jdcpa

Avatar / Picture

Registered:
Posts: 887
Reply with quote  #7 
As mine was due for a full HD clone backup, I pulled the HD and took the cover off to looksee mine. I see no sign of "bulge" in either of those two polys, though the X reliefs seem to produce an illusion of bulge. IME, Lelon electrolytic caps are as reliable as any of the Japanese majors. I figure replacing any of those that aren't obviously leaking or bulging or that you could test as bad with a capacitance measuring tester would be a waste of time. Before messing with any of those caps pictured I'd open the power supply for a looksee. Those PSes hardly have the best of track records.
__________________
Hurricanes Hermine and Irma 28N paths. C Norsats: 8115 on Corotor II on 10' mesh; 5215G5 X2 on Bullseye I on 12' mesh.
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

Thank You for Visiting GOFASTMOTORSPORTS.com - Keep Your Eyes on the Sky and the Track!