Panasonic were one of the major manufactures of Sky Digibox’s, and were considered to be one of the more reliable makes in terms of reliability and performance.
The front panel is typical of the average Sky box of the era, 4 led lights followed by 9 front panel buttons along with two card slots.
A loot at the system details screen, showing the software and revision information
Lifting the Lid
A very clean design, similar to the 2500S5
On the left you can see the main CPU and MPEG2 decoder, seems to be a custom Panasonic MN2 processor (MN2WS0002AD). Whilst I’ve not been able to find a lot of detail on it online, It’s a lot faster than the ST 5512 found in the Pace 2500S5
Not sure about the Panasonic chip towards the bottom, the MN7D022B3M, nothing much turns up online. Not much can be found with the Conexant chip either (SMARTSCM/336 CX88168-12) however one MAME driver source page has it down as a modem
Second card slot
Another view of the MN2 chip with the flash rom (bottom) and memory (Samsung chip next to the MN2)
Main central processor MN2WS0002AD, Looks like it’s missing a heatsink, or maybe Panasonic figured it didn’t need one. Most likely Sky winged about the price so Panasonic had to cut corners. Still the box feels cool to the touch when in use.
The front panel removed
Vs Pace 2500S5
Vs Pace Di4000N
The DSB40 comes from the same generation of digibox as my 2500S5, yet it feels so much faster in operation thanks to its processor. I’m not sure why Pace held onto the St5512 for so long when over digibox’s were moving onto more capable processors. Unfortunately I’m not able to find any further information regarding Panasonic’s MN2 chips that they used, only that they were used for Directv and OpenCable boxes also, and they were mostly MIPS based designed like the NEC EMMA used on some digibox’s.
Then again this box is running older software, maybe the later versions were more demanding?
The only major issue the the telephone cable connector, once you insert the wire, its suck to the digibox and cannot be removed without removing the back panel. I’m not sure why this is, if the connecter was mismatched for the case or maybe it was a cost saving design.
Note: If you have a newer (2018+) Sony Bravia TV, Sony has recently introduced Freesat support for these models. Simply update the software, then hit the settings, Watching TV, than add the Freesat options in the tuning settings menu. More Information
For now the below applies to 2017 and older Android TV models. This may also apply to older non-Android models that Sony produced.
Many higher end Sony TV’s have had satellite tuners for a while now, and whilst you can easily connect it to a Sky dish and it’ll pick up and tune in channels, you will find that they are randomly allocated across the guide, which makes navigating them difficult. Compare this to similar Panasonic and Samsung TV’s that have proper official support for the Freesat EPG.
I decided to modify the EPG used by the TV in order to get it as close as I can to the Freesat order, allowing for a similar experience to an actual Freesat certified TV. This doesn’t fix the issue of lack of TV listings, since Freesat and Sky do not transmit their listings in the common DVB format so you will still be left with Now & Next only, you also won’t be able to decrypt the FTV channels, only view FTA channels that Freesat receivers can decode.
Whilst many Sony TV’s sold in the UK come with DVB-S2 compatible tuners, the issue is Freesat (and Sky) don’t use standard EIT (Event Information Table), which prevent these TV’s from being able to correctly manage and allocate these channels, the result is after a channel scan the TV will place them in a seemly random order, and you will receive little to no TV listings
I should also mention at this point that what were doing involves disabling Youview, since when Youview is enabled you lose access to the satellite tuner. On the plus side you can now add an external USB3 drive to record onto, although I recommend a dedicated PVR device
I’m not gonna sugarcoat it, this software is garbage. Complete Garbage
Whilst it’s able to just do the bare minimum, its a horrible piece of software to navigate, and has a tendency to garble the interface if you select too many channels at once.
I don’t get it, why is Sony incapable of producing software that is able to function property without glitching itself? Why did they feel the need to theme it all to hell and back, a simple Win32 application would have been more then welcome, but instead it has to be skinned. Just look at the open dialog
Why not just use the default Windows open dialog?
This is a frequent occurrence, Alt/tabbing sometimes fixes it, otherwise you will need to save and close.
This is also a pain, rearranging TV channels causes the software to get confused and plonks the channels out of order, see how it goes from 77 to 92, 93 and then back to 80
After getting fed up with Sony’s software I instead opted for an alternative
Chansort is a channel list editing application designed for various TV and satellite receivers on the market. Simply open the sdb.xml extracted from your TV and away you go. This this it was easier to manage and reorganize the channel list to the Freesat order, rather than having channel spread across the EPG.
A common issue was when reordering the channel list with the Sony editor software, it would frequently push the channel list down, rather than replacing or swapping them. With Chansort, you can tell the software if you want to swap the channels, or just insert it before or after, whilst keeping the other channel intact. This became a huge problem with the Sony software as after organizing one section of the EPG, the rest would either shuffle out of their modified positions.
After making the changes I copied the xml file back to the memory stick and plugged it in the TV to import. After importing and letting the TV reboot, the custom channel list loaded.
Unfortunately I had then hit a snag, since the TV is set to automatically update the channel list, and because I had originally deleted the encrypted Sky channels of the guide, the TV would add the channels back into the EPG, and then decided to merge and slot them into the existing channel list, so whilst it kept my custom channel order (mostly), you ended up with a bunch of encrypted channels in between.
One solution to this was disabling the service update option, that would stop the TV from adding channels, but that would mean any new Freesat channels wouldn’t be picked up, also if a channel had changed transponders, then the TV would not pick up the new frequency, instead that channel would display a blank screen.
A workaround to this was to hide the channels instead of deleting them, so whilst the channels would still exist to the TV, they would be ignored. In addition I also moved the channels to the 1000+ section, so that in the event the TV does not hide the channels, they are out of the way from main view.
Update 23/06/2021 – Whilst this worked to an extent, if a new channel had launched or had moved transponders, the TV would still randomly insert the channel in the modified channel list, so another workaround had to be made, this meant slotting the encrypted and hidden Sky channels within the Freesat channels, closing the gaps so when the TV had detected a new channel, it would insert it into the 1000s section, a side effect is if you type the channel numbers in manually, they can still be accessed but you just wont see then within the guide or when scrolling / channel flicking using the Channel + and – keys.
Whilst the EPG now mirrors the Freesat guide, you still don’t get the full TV listings, rather the Now and Next data
When Sky/Astra add new channels, your TV will detect and will automatically add them to the guide, likewise if a channel changes frequency. You will then have to hide the channel, unless it’s a FTA channel that you want to view. A downside is the channel will be placed on a ramdom number
Regional channels, the BBC have multiple feeds for different regions, as do ITV for local news. Channel 4 also has different feeds for local advertising. These are all recognized by the TV as separate channels. Whilst the BBC channels are easy to figure out, since the region is in the channel name, ITV and Channel 4 are more difficult, since they all have the same label (except for STV and UTV, although there are multiple STV regions) I ended up using the main London regions that a regular Sky box used if it had no viewing card inserted. Alternatively you could change the regions themselves using the same software I had used. Regardless I placed all regional channels in the 900 section, but they are not in a particular order.
Some channels are duplicated twice, like Challenge. This is due to Sky running different feeds for Sky and Freesat, maybe the Freesat versions have adverts targeting to resubscribing to Sky or NOWtv?
Some channels are FTA but they are not on Freesat, most of the music channels and many international non English channels, to solve this I allocated the 400 section for international channels since that range is vacant (not sure why Freesat has that empty?) For the music channels I used the old channel numbers, since many of them were on Freesat at some point. Channels that were not on Freesat are place near the end of their genre group.
The Astra UHD test channels are assigned to 1-3, since they are interesting to view and many satellite Sony TV’s are 4K, 4-99 are vacant, My assumption is should the TV find new channels, they will be added here, making it easer to manage, in practice however the TV prefers to put new channels in the 200-400 section
Also, when importing the satellite channel list, it will also replace the terrestrial Freeview channel list also. So after importing the channel list you may need to do a full rescan on the Freeview side unless your on the Sutton Coldfield transmitter. I’m currently looking at a way to remedy this
SDB.xml – Contains the edit channel list that follows the Freesat line up
The Chansort software refernces other TV brands such as Panasonic, Samsung and Toshiba, so the xml file may be compatable with those brands.
Importing (Export to TV)
Copy the sdb.xml file to a FAT32 formatted memory stick to the root of the drive (don’t place the file in any folders)
Insert the USB memory stick into the TV’s USB2 port
After a few seconds the TV should pop up with a message asking what to do with the memory stick, Select Cancel or Ignore
For newer models (Android 9), Press Home → Select Settings (Cog wheel) → Select Watch TV → Select Channels → Program List Transfer → Import
For older models (Android 8), Press Home → Select Settings→ Select Channel Setup → [Digital setup] → [Technical Set-up] → [Program List Transfer] → [Import]
The TV will then import the channel list and will then reboot
There are a few issues and inconsistences as outlined above, mostly with duplicated channels, and the auxiliary channels section being out of order (900+), hopefully the TV’s should have minimal issues with keeping the channels updated.
The Sky Guide user interface has been though a lot of changes ever since its launch in October 1998. Being one of the first Digital TV platforms in the UK, however despite having numerous software updates throughout the years, its core design remains the same albeit with certain alterations being made in light of new feature being added to the service.
Screenshots below are captured off a Pace 2500S5 running EPG software version
Search & Scan
Pressing the blue button cycles through the selected favorite channels, Personally I’ve never understood why it cant just open up a small menu showing favorite channels along with what’s being broadcast now, the way it’s been implemented seems like it was tacked on at the last minute, and if you have nearly 50 favorite channels it can take a while to cycle through them all.
If you wondered what the messages button does, It just shows the message above. Originally it was supposed to received broadcast style messages to the digibox, informing customers of any changes to their service
Low battery icon, supported on 2001 and later revision remotes
Main grid style view, programmes highlighted in white have audio description, this can be changed in the Language & Subtitles menu in the Services section.
Pressing i on the remote brings up a synopsis of the program selected. Also wtf is going on with modern Simpsons?
Sky added further categories in 2005 to accommodate the amount of channels. However in 2021 some of these genres are redundant, there’s only one channel in the Gaming & Dating category for example.
Viewing channels based on genre
No more Lifestyle & Culture channels, Sky merged the genre back into Entertainment
TV Guide: A-Z Listings
Viewing A-Z list of programs by genre. This has always been a mess since the same programme is repeated multiple times due to the advent of +1 and HD simulcasts, Ideally Sky should have combined the same program title into one per channel, instead you can have pages of the same program if it is repeated on multiple channels at different times.
Programs can be viewed by subgenres, which can be selected using the bottom row of colour buttons.
TV Guide: Personal Planner
The Personal Planner was introduced in 2001, and serves as a timer and reminder feature of Sky Guide. Programs can be added here and the digibox will remind you when the program starts. Autoview will make the digibox switch over to the channel automatically, useful for recording programs to a VCR (remember those?). Series Link automatically adds the next program to the personal planner, like the Season Pass feature of the Tivo.
To be honest, I found the Personal Planner to be buggy, many series links will randomly disappear over time.
TV Guide: Favorite Channels
The Digibox can store up to 50 favorite channels, which a separate EPG being introduced that lists the favorite channels exclusively, introduced in the EPG 3.4 update
Sadly Sky axed it’s Box Office Pay-Per-View in 2016 in favor of its on demand service. So this part of the guide is now dead.
Shows telephone numbers for broadcasters and departments on Sky. I thought this was a wasted feature since how often do you contact these broadcasters?
A better feature would be to allow the user to enter and save their own phone numbers, then should a contact call, a small message would appear with the callers phone number and name, like a caller display feature. It would certainly give customers a good reason to plug the Digibox into the phoneline. The only time I’ve seen this feature implemented was on a BT Freeview box.
Services: System Setup
Second Location Picture Format refers to the RF2 output, if the second TV is 4:3 with the main set being 16:9
On-Screen icon timeout referrers to the red button props that appear for interactive. Previously the red button icons would stay on screen unless the user pressed the Backup key
Model number referrers to the driver stack implemented on the digibox, and varies for each box model and revision
Version Number – First two characters refer to the Digibox manufacturer, the next two are the major revision (model/CPU chipset), the last two refer to the minor Digibox hardware revision. This field is static and remains the same throughout
Serial Number – identifies the digibox uniquely
Viewing Card Number – Refers to the viewing card number currently inserted
Operating System – the core operating system on the digibox, using a modified OpenTV1.2 with the NucleusOS realtime kernel
EPG Software Version – Version of Sky Guide currently running
Signal Strength – How much signal is being received, determined by the size of the dish, quality and length of the cable run and the quality of the tuner used in the box.
Signal Quality – Signal to noise ratio
Lock Indicator – If the digibox can decode the transport stream
Network ID – Used to identify the satellite the user is on, Astra 28.2 is 0002 with Astra 19.2E being 0001, Hotbird 13E is 013e
Transport Stream – The transponder that the digibox is tuned to
Services: Installer Setup
This menu is hidden in plain view, since it can technically disrupt normal operation of the digibox.
LNB Setup – To change tuning parameters of the LNB if a non standard LNB is being used, not needed if using a Sky Minidish.
Default Transponder – The transponder where the Digibox loads its TV listings upon bootup
Telephone Settings – If the user need to specify a prefix to access the outside line
RF Outlets – To change the RF output channel
Manual Tuning – Manually tune a frequency, similar to Add Channels but shows the signal strength and quality.
Services: Auto Standby
Services: Other Channels
Other Channels lets you add channels that are not on the Sky EPG, but are broadcasting on the 28.2E satellite. These could be regional channels not populated on the guide, or test channels.
In theory you could use this feature to watch channels on different satellite providing your dish is pointed to the satellite. In practice you are limited to two symbol rates (22.0 and 27.5) which restricts what transponders you can tune into (on 19.2E this isn’t much of an issue since Astra frequencies tend to stay consistent). The digibox isn’t a good receiver for this purpose since it wasn’t designed for it, it only barley works with the standard Sky digital service.
Services: Favorite Channels
Lets the customer program up to 50 favorite channels. This was originally 20 channels with the limit being increased in 2005.
Pressing i gives you a channel description, this also appears when you access a channel that you are not subscribed to.
A list of interactive services, or service. Sadly this menu used to be full of different service that were available back in the day (Playjam, Sky Active, QVC, DirectGov, Gky Gamestar)
Unfortunately MySky no longer loads
Pressing i gives you a description of the service
What happens when you disconnect the sat feed, the box cannot load listings, showing that the full listings are not cached in the digibox itself
A weird glitch, BBC Alba and Premier Sports on channel 65535
I believe this is due to a channel being restricted via the encryption, yet the customer is enrolled on the package. Could be due to area/post code restrictions,
Low battery message, supported on v4 remotes and later
Nag screen that appears when you boot up the digibox without a telephone line connected, since Sky have axed all of the interactive services (except for BBCi which does not use the telephone) they might as well remove this prompt
Appers when you switch on the digibox from the mains
All regular Sky digibox’s can only decode MPEG2 SD channels, if you go to an HD channel you simply receive this message. You used to be able to get tv listings for HD channels but Sky remove this to conserve memory since they were running out of EPG spaces
Appears when you insert the viewing card backwards, rumored to charge Sky for the subscription rather than the customer
When you have no signal being received for that channel transponder
Sometimes the digibox can’t load the program information, this message will be diplayed for a few seconds before the synopsis appears.
One of the many Digibox’s Pace produced over the years, and one of the first to have the tuner integrated on the mainboard, previous models had the tuner enclosed on a separate metal box fixed onto the board, or as a ZIF style socket module.
Another box from the same era was the PaceDi4000N for ntl, although this is a cable receiver you can see some similarities in the design.
Its quite a minimal clean design compared to the other boxes Pace have produced, like the Di4001
Back to the 2500S5, you can see the CPU of the box
The main, and only processor STi5512SWE. This chip incorporates the CPU (ST20) running at 60Mhz, MPEG2 decoder and graphics processor, basically a receiver on a chip. I’m not sure how it compares to other digibox’s of the era in terms of speed, considering this box was made in 2002.
ST processors were stupidly popular in many satellite receivers, and this one seems to be an NDS variant
Not sure what this chip does, maybe I/O for the RS232 port?
The unused PCMCIA slot
Flash memory chips (right) that store the EPG software and operating system. Each chip is 2Mb for a total of 4Mb Flash. There are two unpopulated banks for a potential of 8Mb. The chip at the top left, above the Omega chip is part of the RAM.
View of the dual card slots, the bottom is for the viewing card, whilst the top is for the interactive card.
Appears to be the modem used for the Digibox’s return path. This allows for the digibox to communicate back to Sky for box office events and interactive. Unsure of the port on the right
The front of the box with the panel removed, showing the location of the remote sensor