I cant get the back off PR-D5 AM/FM Radio. I've removed 5 screws. Are there more?

Question edited for clarity, full 'make model what it is. Also it is a D5 not a DS.

This says if has 6 batteries, but you inserted 8? This link found via Google just happens to be where I bought my metal detector, GPS and Fish finder and the owner is a good friend. Their staff are hot on customer service if you phone and ask for help. My only thoughts are;
The batteries are incorrectly inserted.
It is set to the wrong input.
It is faulty.

Lots of help in the link

https://www.google.com/search?q=Sangean+PR-D5+won%27t+turn+on

The manual says 6 batteries, but not the polarity. Did you try the mains adapter? And you are right, the manual is not good!

https://www.manualslib.com/manual/317226/Sangean-Pr-D5.html#manual

Sangean PR-D5 AM/FM Digital Portable Radio - Radioworld

https://www.radioworld.ca > san-prd5
This light and powerful radio that is capable of being powered by the included AC adapter or 6 "C" batteries. PLL Synthesized tuning provides exact, fade free ...
$109.99 · ‎In stock

https://www.google.com/shopping/product/5230445131691884133?q=Sinotec+FM+Portable+Radio+PR-45U&biw=1581&bih=780&prds=epd:689868405630832036,prmr:3&sa=X&ved=0ahUKEwjd15yo6uDjAhVQ7qwKHeX2Dq0Q8wIInAI

https://www.google.com/shopping/product/5230445131691884133?q=Sinotec+FM+Portable+Radio+PR-45U&biw=1581&bih=780&prds=epd:9610168682305894807,paur:ClkAsKraXy1pk04Pay_HXkkMIEGesX0OPtd9brTgXvolll6Zvmu8TO40ZXdRVY3ALgpP2NilGEmGO3I-yCJkCLNfN3aDTAn344YZad00knIYlcuykp9SxmcVzxIZAFPVH73ZNNaLKMC67UIELgK8TchqTh2Hhg,prmr:1&sa=X&ved=0ahUKEwjd15yo6uDjAhVQ7qwKHeX2Dq0Q8wIIxgI

https://www.hificorp.co.za/sinotec-fm-portable-radio-pr-45u https://www.sinoprima.co.za/product/portable-radio

there is a diode D301 must be opened, replace it should be ok, but have to check your AC adaptor in advance.

After removing the 6 screw, gently slide the front panel out of the box. Now disconnect the little 2-way connector with a black and white wires: it should be the more tight cable between the front cover you have just removed and the rear panel.
Now slip-on your fingers in the box and push the rear panel up to slide it off the box, so that you can turn gently the front panel, pass it through the box and get the electronic completely apart from the wooden case.

Archer, I have read the entire PR-3DL manual and there appears no mention of a 12/24 hr setting, unlike certain other Sangean radios. The instructions for setting the alarm do not mention 'a.m.' or 'p.m.' .

Apparently, the clock is a 24:XX:XX display only.

TAKE OUT CENTER PIECE ,FRONT OF RADIO,THEN RADIO HAS SCREWS IN FRONT AND OR BACK OF RADIO, DISCOPNNECT THE WIRES AND ANTENNA

Pull off the 3 knobs for the heat controls. You will see a screw under the center knob. Remove it. Look to see if there are any screws near the vent grilles, remove them, if they are there. The whole center fascia then pulls out towards you. Remove the 4 bolts, and the radio is out. Easy.

here is a link to the manual for your radio (english http://myweb.accessus.net/~090/bearcatting.html#motoman They do not give out the information of how to program it, only authorised technicians are permitted to do so. Here is the link to motorola customer support in Puerto Rico https://www.motorola.com/pr/feedback.jsp They should be able to tell you where you can get your radio programmed, and what programming is permitted in PR. Hope this helps :)

take all screws out of front perimeter, then there are 2 screws on the back at the bottom right and left you have to look close these screws are deep.