Tuner slot issues

Tuner connection schedule updated.
The U8 connections are now complete, the U20, better described.

Tunerslot voltage measurements, with and without tuner.

Voltage overview from the HG001-01 Tuner connector.
Similarly, a overview of the compounds as an example, pin A goes to pin A.
See this image,

Tuner voltage or Ohm measurements, tuner connected, by Vcd completely started.
BSBE2-401A and BSBE2-801A Ohm measurement data

TIP: Tuner issue
Dreambox rebooting when trying to scan.
Probably a wrong tuner version, try a different version such as rev. M.
Problem, Dreambox 800hd reset / restart spontaneously during startup and or channel switching.
Without a tuner, it will start normally, changing the tuner does not help.
More information, read..,

TIP2: Tuner issue
Sometimes you have that the tuner is not recognized, now it may be the tuner, but my experience is often different.
Mostly, the tuner lock is pollutes often you see also dull contacts in the slot.
After a good cleaning everything works normal again.
Howto, See image

After an update, the tuner is no longer present,
Reason, sim card related.
Could be a wrong or corrupted bootloader, one that is not suitable for the sim card that is present in the receiver.
Upload the appropriate bootloader.

Old/New types tuners.
Also, another case, but the same solution.
Older tuners are recognized, but a new type fails, or the box reset during startup.
Also this was resolved after a good tuner slot cleaning.

New types tuners on old motherboard,
Also, a solution, and already mentioned is the placement of a resistor at top of the capacitor C276.
It can help with newer tuners on older motherboards.
Newer motherboard already have this modification.

Something to think about before you buy a new tuner.

(Thank you to Johnny_B for publishing it)

All the best about hardware/support from Johnny_B, link :
http://jb8a8f8.com
http://jb8a8f8.nl