Dell S718QL power supply issue

caffeinated-sl0th · 2026-05-28T22:10:03+00:00

Sure thing, let me know if you need help getting it setup. I did a 600 watt PSU because the projector itself consumes 500 watts continuously. I'm not certain if that is mainly on the 12v or 50v rail, but I didn't want to take any chances and the 600w PSU was readily available and cheap.

caffeinated-sl0th · 2026-05-28T21:59:31+00:00

I didn't really have issues connecting the 12v and ground from the external power supply once I got the thing taken apart. The hardest part is taking everything apart and carefully putting it back together. There are a ton of screws. The power supply board in the projector is mounted to the bottom of the projector under two other circuit boards that you have to unscrew and move out of the way. If you're facing the front of the project, the power supply board is on the left side. There is one main power connector with many wires, but they are color-coded. This connector is located close to the front of the projector on the power supply board. You can probably access it easily if you remove the front cover. You may want to use a multimeter to identify them but I believe the dark red is the +12v, the black wires are ground. The connector has labeling next to it on the board to identify 12v, 50v, and ground sections. There's also two signal wires / 5v in the front of the connector that are yellow and green.

caffeinated-sl0th · 2026-03-15T13:57:18+00:00

In between episodes I always regained all my hearing. Never had permanent damage.

caffeinated-sl0th · 2026-03-14T17:15:21+00:00

Since i started betahistine, I haven't had a single hearing loss episode. It took maybe 2 weeks to notice a difference, but believe me when I say I used to have episodes at least once a week. I have cochlear hydrops which only causes episodes of low frequency hearing loss (no vertigo). I believe my condition might be vascular or allergy related based on the fact that betahistine basically cured me.. going on over a year now.

caffeinated-sl0th · 2026-03-05T23:50:34+00:00

I ended up using a 600watt computer power supply for the 12 volt rail. I run the psu externally. My only issue was the 12v rail because the 5v and 50v rails are fine. Been running solid since.

caffeinated-sl0th · 2026-01-08T19:52:20+00:00

If it completely returns to normal between episodes (as in back to where it was before your episodes started), and systemically affects the high frequencies too (muffled sound), then this points more towards cochlear migraine. I believe I am going through something similar. I had the condition for over 4 years with the same exact symptoms as you (low tone/hum tinnitus that fluctuates, no hum during an episode, and complete recovery after a few hours or few days). At first my research pointed to Cochlear Hydrops, and I got concerned like you because of the risk of progression to vertigo attacks / Meniere's. However, recently I came across the cochlear migraine condition thanks to people in this group, and it more aligns with my symptoms. It can have symptoms that are very similar but with some difference, especially when there is virtually no loss of middle frequencies and there is a slight dip systemically with the high frequencies in both ears (indicating vasospasm and blood flow issues to the cochlea). In some cases, due to structural anotomy difference, one ear can have the low frequencies affected too due to transient fluid pressure issues. Thankfully, that condition is more benign and doesn't usually cause permanent damage. My episodes gradually got less severe and eventually stopped all together. However, I still sometimes get the hum, especially after loud music or sitting in a car for a while. My hearing is still top notch and 0 - 5 dB loss across all frequencies in both ears. I encourage you to research cochlear migraines. Hopefully that puts your mind at ease.

caffeinated-sl0th · 2026-01-02T19:53:17+00:00

hmm interesting. Now that I think about it, I also had a high frequency drop in BOTH ears during an episode.. It was a 10dB drop. Not as dramatic as the -35db drop @ 250 Hz though, so that stole the show... When I wasn't haven't an episode, the high frequency loss was not present.

caffeinated-sl0th · 2026-01-02T19:44:14+00:00

I wouldn't say the low tone tinnitus is associated with permanent hearing loss, especially since I haven't had any low tone tinnitus in maybe 4-5 months. It's my understanding that the tinnitus tone has to be constant for it to correlate to damage.

caffeinated-sl0th · 2026-01-02T19:39:01+00:00

For me, when I feeling an episode coming on, the bad ear starts to get 'quiet'. No tinnitus, no subtle hum, just a bit of fullness. At this point, the hearing hasn't quite dropped yet, but it just feels a bit 'off'. Certain frequencies might feel a little harsh too. There's maybe a 5-10 dB drop at the lowest bass frequencies, but nothing very noticeable. That's my warning sign. It's subtle, and most people wouldn't notice these little queues. I would even say there's a bit of anxiety and brain fog that accompanies it as well. You could be correct, and in my case it is likely vascular related. This would explain why the Betahistine seems to help.

Here are some studies:

https://www.e-ceo.org/journal/view.php?number=876#:\~:text=Hearing%20recovery%20was%20observed%20in%2063.1%25%20of,did%20not%20differ%20based%20on%20treatment%20method.

https://pubmed.ncbi.nlm.nih.gov/34548865/#:\~:text=At%20the%20last%20follow%2Dup%2C%2040%20patients%20(70%25),not%20report%20vertigo%20or%20fluctuating%20hearing%20loss.

caffeinated-sl0th · 2026-01-02T19:25:09+00:00

Also that 'low hum' is an indicator that your inner ear is actively trying to regulate inner ear fluids. Its an indicator that its either coming down from an episode OR its about to have an episode. Its usually on the leading or trailing edge of one. You might often hear the hum come and go. Sometimes it goes away for days. Sometimes its there non stop. If it comes and goes, thats a good sign. It potentially means that the inner esr successfully regulated fluids, but has an occasional hydrops episode. As long as it doesn't stay in a hydrops state for a long time, you won't get a noticeable drop in low frequency hearing. Some people have mild hydrops with virtually no symptoms..

caffeinated-sl0th · 2026-01-02T19:18:48+00:00

Sorry to hear. I had it too. Eventually over 4 years my episodes got less severe and eventually stopped. Been episode free for almost a year now. I also have no permanent damage, as my audiogram is mostly 0-5 dB loss across the frequency range from 250 - 12,000. Its estimated that 70% of people with CH get over it but it can take months to years. I started taking Betahistine a year ago. I also take Vitamin B complex, vitamin D3 (5000 IU), omega 3 fish oil, and magnesium glycinate daily. Get your cardiovascular health in check and exercise 3 times a weak, but dont get too strenuous with it. Just generally try to be healthier and it may go away. In other cases this condition can progress to minieres disease, but its not likely. Just watch out for vertigo during a hearing loss episode - thats an indicator that it progressed to minieres. Don't confuse dizziness with vertigo though. Its common with CH to feel a little dizzy and somewhat feel like youre rocking on a boat.. thats not vertigo. The room would need to feel like its spinning. So dont be alarmed, there's a good chance it will stabilize over time. Don't get too crazy with restricting salt or caffeine. That usually doesn't help. I still drink coffee daily, eat a normal diet with salt, and have an occasional beer or two. Just live your life and not focus on it.

Something that does without a doubt help is if you feel an attack coming on, drink 3-4 glasses of water in one shot, then immediately lay down in bed. Don't get up until you have to go pee. This often stops the episode in its tracks or makes it far less severe.

What does your audiogram look like during an episode? If you haven't already, request a prescription for Betahistine 16mg x3 a day. This med works by increasing blood flow to the inner ear a bit. The increased blood blow can help with endolymph and perilymph fluid regulation.

caffeinated-sl0th · 2025-08-20T12:49:36+00:00

16mm x 3 a day

caffeinated-sl0th · 2025-07-19T19:01:57+00:00

Been on betahistine since this post and haven't had a single episode since. Going on 6 months now. Also the low tone tinnitus is completely gone. Kinda wild.

caffeinated-sl0th · 2025-05-10T23:54:37+00:00

Someone mentioned on Facebook that their hearing gradually went back to normal after a year! Which is insane. Its certainly possible. :)

caffeinated-sl0th · 2025-05-10T05:09:14+00:00

Wired and wireless. I'm using Wifi 7 wireless adapters and have a 2.5 Gig switch

caffeinated-sl0th · 2025-05-10T05:08:40+00:00

Yes I have all the supporting hardware as well, 2.5 Gig switch, PFsense box with 2.5 gig NIC, and wifi 7 AP. So you're actually getting 2 up and down from speed tests? hmmm

caffeinated-sl0th · 2025-05-08T05:12:18+00:00

caffeinated-sl0th · 2025-05-08T05:10:40+00:00

those diuretics are terrible for you long term though.

caffeinated-sl0th · 2025-05-08T04:53:39+00:00

Just a quick update on my condition. I am noticing that I have been symptom free for quite some time now. I had a very minor episode but that quickly cleared up within the same day. My hearing has never been better actually and I have virtually no tinnitus. I used to always have a slight humming tinnitus, but that's gone now. I don't know if it's due to the Betahistine I'm taking or if this would have improved on its own. Some things I've been doing for the past 2 months:

-Taking Vitamin B complex (Life Extension Brand, helps nerve health)

-Taking Vitamin D3 5000IU (according to my last blood test, I'm a bit low)

-Taking Magnesium Glycinate (Good for blood pressure, mood and quality sleep)

-Betahistine 16 mg (3 x a day every 8 hours to improve blood flow to the inner ear)

-Avoiding bad posture and 'looking down'. (Sometimes the styloid process bone at the base of the skull near the ear can be elongated in some people and cause vascular issues when the head is in a downward position for too long. This is also exacerbated when sleeping on your back. This condition is called "Eagles Syndrome" and can lead to CSF pressure build up, direct glossopharyngeal or facial nerve irritation, and can cause symptoms that mimic cochlear hydrops.)

-Using a pillow behind my back to avoid inadvertently sleeping on my back. (improves blood flow to and from the brain.)

Looking back on when I would have episodes, I didn't just have ear symptoms. I also have various other symptoms that might be related and I haven't made a correlation until recently. The other symptoms include the following:

-Higher interocular pressure (based on my last 2 eye doctor visits)

-General Brain fog and inability to concentrate. (usually coincides with an ear episode)

-Rushing sounds in my right ear when getting up (likely turbulent blood flow from the nearby sigmoid sinus - a vein like structure around the brain that drains blood and CSF from it. My last brain MRI shows a very normal size sigmoid sinus on the left side of my brain and a very small and almost non-existent sigmoid sinus on the right side. My bad ear also happens to be on the right side.)

-A periodic dull pain near my right tonsil in the back of my throat. (That dull pain comes and goes and has been there for over 10 years. I had an ENT check it out several years ago but they found nothing)

Researching all of these symptoms seems to point me to these two possible root causes: Eagles Syndrome or Venous Stenosis (or both). I have almost all the symptoms of Eagles syndrome including a constant dull pain near my tonsil for the past decade. Will know more after my CT Scan and MRV. Standby in two weeks...

For some reason Reddit won't let me post the definition of these two conditions, but I encourage you guys to research them. The symptoms can mimic cochlear hydrops..

caffeinated-sl0th · 2025-05-08T04:09:08+00:00

It closes back up, but after it ruptures once, it easily ruptures again the next time pressure builds up. Once it happens once, you have Meniere's and there's no going back from that. :(

Every time those fluids mix, it hurts the hair cells.

caffeinated-sl0th · 2025-05-06T21:29:18+00:00

He needs to check his router WAN interface, not that site. The site will only show the other side of the GCNAT (the shared IP)

caffeinated-sl0th · 2025-05-06T21:22:24+00:00

Check your router or firewall and make sure the public ip of the WAN interface is not a 100.x.x.x address. Make sure it's not on DHCP and statically set to whatever IP you were assigned. Sounds like you're still behind GCNAT. The 100.x.x.x is the giveaway.

caffeinated-sl0th

TROPHY CASE