Saab Radio - Everything but Tuner Works

[DenCon]

Everything else works: CD, cassette, antenna - but no tuner (AM, FM, WB) functionality, I've tested and repaired the antenna cable, antenna is good, but tuner seek does not seek.
I opened up the radio case, looking for anything fried or broken - all looks good.
Where is there a schematic and/or description of the internals of the radio?
I suspect a signal outage going to the tuner, but I get no white noise (static, etc) either. I noticed a small white relay adjacent to the tuner section/antenna jack - can someone ID this relay?

[RichSPK]

Seek does not seek sounds like a bad contact under the seek buttons.

[DenCon]

No - it appears to have no radio signal going in (there's nothing to seek).

[RichSPK]

Hmm... It seems unlikely that the antenna is the problem; you'd likely get something even with no antenna. Personally, I'd get a replacement from a salvage yard (or something aftermarket) before I'd try repairing the tuner.

[DenCon]

Yeah, that's my reckoning - since no one around here has another OE HU, I'm considering getting an aftermarket stereo. At least, it'll have all the modern bells and whistles.

[RichSPK]

Yeah. I'm tempted to upgrade the radio in my 9-5, but I'm not sure how it ties into the SID and I'd have to give up the steering wheel controls (which I almost never use...). I had a Dual brand radio in my previous car that I got from Crutchfield for $30 (I think it was refurbished). It had bluetooth and worked fine. I really miss the bluetooth.