Nah, most of their other divisions are in the black. They do have some dead weight, but things have far improved. In fact, unlike a few misperceptions, PlayStation isn't even Sony's strongest division. 

Isn't it their insurance division?  They did shed a lot of their money losing operations which was probably smartest thing they could have done.  They sold their Vaio PC division to Lenovo which was smart because no one gives a shit about Vaios anymore.  They also did a lot of restructuring of their TV division which was bleeding money from them for years if not decades.  Not sure if their TV division is in the black now but it couldn't do much worse than it was doing.

Here's the profits/losses of all divisions for the year, (ordered by profit).

Financial Services : $1.48 Billion
Game & Network Services : $1.21 Billion
Music : $677 Million
Home Entertainment & Sound : $522 Million
Imaging Products & Solutions : $422 Million
Semiconductors : -$70 Million
Mobile Communications : -$91 Million
Components : -$540 Million
Pictures : -$719 Million

Not bad besides pictures and components division.  How the heck are they losing money on movies?  I thought most studios could turn out a shit movies and still make profit. 

It's not just one division... Financial Services did even better than PlayStation and I think their other divisons are doing better then you think, only two took really major losses, they definitely don't have 9 failing divisions. There's certainly no need to be worried about Sony now this is the best they've been in years. Here's all the Divisions ordered by profit.

Financial Services : $1.48 Billion
Game & Network Services : $1.21 Billion
Music : $677 Million
Home Entertainment & Sound : $522 Million
Imaging Products & Solutions : $422 Million
Semiconductors : -$70 Million
Mobile Communications : -$91 Million
Components : -$540 Million
Pictures : -$719 Million

Your right on the money, PlayStation and Financial Services are the only two divisions with a sustainable future. The CMOS chips have a potential to keep a hold for a while, but a major break through by another company could quickly eat away at this.

Sony expects to sell less Home A/V equipment next year at a lower profit, they think they will sell more phones, but make less, and they expect the Music division to continue to lower revenue and profits as people continue to shift to streaming. The Pictutes division should do better next year, but I am not convienced they have things figured out. Sony has really failed to make any franchises, James Bond is back up for grabs, and Spiderman is not enough to carry a whole studio.

Sony needs to embrace their position as the mega gaming company. They need to move their TVs, Phones, Car Audio, and other devices over to the PlayStation ecosystem, and unifiy their OS experience. They are only selling 20 - 30 Million TVs  + Phones a year, and running them on Android, they bring in no future revenue or profits, and they do nothing to increase Sonys value. Moving all of their products to a One Sony Operating System (OSOS), they would be able to greatly increase their position in the market, and have a unified goal. The days of each division working against each other needs to end. Right now PlayStation is building a highly profitable internal OS and Cloud based media service. Then the Mobile and Home divisions are building a competing user experience on a competitors OS, and Sony Pictures is building a competing cloud based movie service all three of which are loosing market share and burning through cash. If they don't fix this, the loosing divisions will become unviable, and the lack of a broader ecosystem will drag the PlayStation division down. They must work as one.

Beyond moving to a scalable unifid Hardware and OS structure, they need to embrace their gaming IPs in the movie division. There have been talks about making movies based on their gaming IP and some have happened, but beyond last years Ratchet and Clank movie, they have all been half hearted. They have massive opportunity to build up current franchises, or revive old IP via movies and TV, it is an absolute gold mine yet to be tapped into.

Sony is being carried right now by PlayStation and Financial Services. They have massive amounts of potential as they have some of the best mobile, home, and car tech in the industry, but they are failing to capitalize. If they can unifiy their divisions behind one goal, they could accomplish amazing things, but if they continue down this road, the PlayStation star will fade, and their will be no future Sony They need to make a move in the next couple of years if they want to continue to grow, or even stay relevant in the future of the Unified Hardware, OSs, and ecosystems.