Onkyo TX-DS898 Memory Loss

No internal battery, a large "SuperCap" on the main board acts as one. Look for C8007, 0.1 F, 5.5V.

How change battery and the battery model

Hello,
You should disconnect all speaker connections. If the problem persists, you have a faulty receiver in need of repair. Not easy for the DIY. If the removal of the speakers allow normal operation, reconnect one at a time making sure not to short-circuit any output. By the description, I will mostly assume a bad receiver. Local repair shops can help.

I realize you may have already doubled checked but make sure you follow this from the manual:
If the satellite tuner / cable box is equipped with an S video output
terminal, connect it to the S VIDEO 3 (or 4) IN terminal with an S
video cable. If it does not have an S video output terminal, connect
its video output terminal to the VIDEO 3 (or 4) IN terminal using an
RCA-type video connection cable. You do not need to connect to
both the S VIDEO 3 (or 4) IN and VIDEO 3 (or 4) IN terminals. If
the satellite tuner or television has component video outputs,
connect them to one of the COMPONENT VIDEO INPUT jacks.
With the initial settings of the TX-DS898, the VIDEO 3 and
VIDEO 4 input sources are set for the COMPONENT VIDEO
INPUT 2 jack.
If the video connection is made at COMPONENT VIDEO INPUT
1, this must be changed at the Setup menu: Input Setup → Video
Setup → Component Video (see page 35).
Using an RCA-type audio connection cable, connect the audio
output terminal on the satellite tuner or television to the same
VIDEO 3 (or 4) IN audio jacks on the TX-DS898. Make sure that
you properly connect the left channel to the L jack and the right
channel to the R jack.
If the device has a digital output jack as well, be sure to also connect
it to either a DIGITAL INPUT (COAXIAL) or DIGITAL INPUT
(OPTICAL) jack on the TX-DS898 depending on the device.
With the initial settings of the TX-DS898, the VIDEO 3 input source
is set for digital input at the OPTICAL 3 jack, and the VIDEO 4
input source is set for digital input at the OPTICAL 4 jack.
If the digital connection is made at a different jack, this must be changed
at the Setup menu: Input Setup → Digital Setup (see page 33).

setting the stations goes like this:

First hit class a, b, c etc, and to clear out what is there, hit 1, then hit both memory and the one next to it at the same time to delete what is in there, To program, hit memory, then quickly, class a, b, c, etc. What it does it store that station in the NEXT AVAILABLE slot, so it is best to clear all slots, and have the station call numbers ready in the order you wish to set them.

Hi LuckyLady1

Yes, some units lose their presets quickly with the power disconnected. Most lose all memory presets within 10 days. They are designed this way. You may have to get someone in to sort it out for you if you cannot do it. Or ask me for a chat session and I can talk you through it. :)

regards
Graeme

Ik have the same problem as Toolathep.
Is there a solution for it?
replacing the battery?

Turning any receiver off will erase the settings - there is no backup battery (Onkyo uses Battery Free Memory Backup) and the length of time depends on the capacitor charge. Why not just leave the receiver plugged in? Stand-by mode uses a negligible amount of power - enough to keep the capacitors charged and the LED on the front panel on.

yes there is ,,, it is located on the same board that has 3 fuses on it, you will have to unplug the unit before disassembly, and remove the top cove and bottow covers,,,, you will have to de-solder a small battery pack surrounded by either blue or yellow heat shrink,,, please not the polarity before removal, as putting it in wrong will cause a non- memory retaining situation to continue...I hope this helps