GmP Posted 8 hours ago Posted 8 hours ago Hi, welcome everyone. I’m using an H50 TV box that I was about to throw away because I thought I had completely bricked it. I disassembled it and found the pins to activate maskrom mode. I think this could be useful for everyone. I then installed the current image, and everything seems to work except for the HDMI output (blank screen). Do you have any suggestions? Thanks. Some data and photo below. In case you want to install please note that also multitool fails to activate the HDMI, so you will need SSH to config. SOC: RK3188 (Hopefully - I did not remove the heatsink) eMMC: Samsung KLMBG4GEAC-B001 32GB (64x4) eMCP: Samsung KMQN10006B 8 GB eMMC + 1 GB LPDDR3 RAM Wi-Fi IC 339S0209 2.4G/5G LAN working WIFI Working ---------------------------- root@rk3318-box:~# lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Vendor ID: ARM Model name: Cortex-A53 Model: 4 Thread(s) per core: 1 Core(s) per cluster: 4 Socket(s): - Cluster(s): 1 Stepping: r0p4 CPU(s) scaling MHz: 60% CPU max MHz: 1008.0000 CPU min MHz: 600.0000 BogoMIPS: 48.00 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid Caches (sum of all): L1d: 128 KiB (4 instances) L1i: 128 KiB (4 instances) L2: 256 KiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0-3 Vulnerabilities: Gather data sampling: Not affected Indirect target selection: Not affected Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Mmio stale data: Not affected Reg file data sampling: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Not affected Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Not affected Srbds: Not affected Tsa: Not affected Tsx async abort: Not affected Vmscape: Not affected root@rk3318-box:~# free -l total used free shared buff/cache available Mem: 1504636 291372 1037440 46940 297848 1213264 Low: 1504636 467196 1037440 High: 0 0 0 Swap: 752316 0 752316 SOME TESTS ON THE HDMI ISSUE: hdmi_debug_20251008_230528.log hdmi_test_20251008_230948.log 0 Quote
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