So I've had this HTiaB since like 2008. A few years ago, the display went out, but I had everything set, I just needed to hit input enough times to get where I wanted.
Recently, I've started to get a bit of an echo on from voices off screen. It's disorienting in video games and weird on movies and TV.
The speakers for this things are 3ohm and continue to work just as well as I think they did when I unboxed them.
My priority is getting a replacement receiver that supports HDMI, but I have seen similar posts with replies advocating that 3ohm suck and to get something new....I'm just trying to save a couple bucks and allow a simple swap of equipment. Redoing the speaker set up would be more tedious than difficult.
My goal is to keep the price tag around $350....hoping to catch something on sale for Black Friday.
Unfortunately HTIB systems when they fail have to be totally replaced. Three ohm speakers will spell death to a new receiver, which are not designed for that low an impedance. In addition HTIBs do not generally have powered sub woofers. So I'm afraid you are in for a significant expense, if you want to replace an HTIB with an AV receiver. You will need to replace all the speakers, and get a powered sub, in addition to purchasing a receiver.
I would avoid another HTIB as they are all horrible, unreliable and proprietary. So if you want something better it is going to mean a much larger outlay than $350.00. We get posts like yours with significant frequency so this problem is not new to us. You have to face the fact, that those speakers are now useless to you, or anyone else.
I found the manual for that system, and the sub is not powered, and so that is also useless. Subs now contain there own amps, and receivers do not contain an amp to power a sub, but a high impedance RCA connection to send the sub signal to the subwoofer.