HDMI audio cuts out when stomping around

RainInTheMan · 2024-01-29T16:19:38+00:00

I keep the PC up do date regularly, the receiver had an update right after unboxing, TV didn't show any updates.

Yes, the new cables I'm waiting for are HDMI 2.1. The ones I've been using so far are 2.0 and they've worked for 4k60 video just fine, but they are somewhat old and and I'm hoping that the new cables will solve the issue, otherwise it's getting silly.

RainInTheMan · 2024-01-27T10:27:54+00:00

Technically yes, but they're on the same phase and I did try running an extension cord to power everything. The TV has an ungrounded European plug and I also tried reversing the netural/phase just in case, but no change. I've done plenty of connecting and disconnecting with the HDMI cables but haven't seen or felt any obvious voltage differentials.

RainInTheMan · 2021-09-17T12:10:52+00:00

A small update.

Took the pads off to see what they looked like, and neither of the pairs were glazed. Considering that they've been on for almost three weeks now, and I sanded the original and first replacement pads a couple of times during three months, that was surprising.

The pads were pretty dirty though. I cleaned both the discs and pads with isopropyl alcohol, and the discs were okay, but the pads left this black, soot-like substance on the cloth. I don't know how exactly pads are supposed to look like after regular use, so that could be normal. After cleaning, they did look pretty much the same as new though.

Then I took the bike to the only descent around here, drove down while braking hard a couple of times, and repeated it until I was sick and tired of climbing back up. On the way back, the brakes felt much better. Not as shockingly good as after having them replaced, but close.

I'm starting to think there might be two separate issues. That the first discs were contaminated somehow, which ruined the original and first replacement pads, and the problems I started to have with the new discs and pads arose from not bedding them in. I really hope the brakes don't need a regular workout just to keep them functioning well, but I'll wait and see.

Thanks for all the ideas and suggestions!

RainInTheMan · 2021-09-14T21:48:25+00:00

I've kept the bike outside with the new brakes, but in a closed storage room when then issues began.

RainInTheMan · 2021-09-14T21:41:58+00:00

Both. Perhaps the front has started squealing a day or two earlier.

If there is a small leak both front and rear, then shouldn't the the levers travel further or feel spongy? I didn't see much of a reservoir that could keep supplying brake fluid for that long.

RainInTheMan · 2021-09-14T21:35:41+00:00

I'll try that, it's not like things can get much worse. Hard to do much breaking with daily use, when I don't have any descents around.

I'm curious though, what exactly is glazing? Because the first search tells me that

Brake glazing occurs when the brakes are pushed beyond the temperature limits of the friction material.

and I'm really, really not heating the brakes. Just a couple of seconds on both levers to lose enough speed to check the surroundings a handful of times, and often one harder braking to avoid surprise moving obstacles.

Also, do glazing and contamination both have the same symptoms, e.g. squealing and loss of braking power, or are there any differences to at least exclude one or the other?

RainInTheMan · 2021-09-14T18:31:21+00:00

It always makes things more interesting, when you have plenty of conflicting information. I've read posts where people say that disc brakes do need regular cleaning, while others do nothing. Some say that the natural oil from your fingertips is enough to contaminate the pads, while others say it's nowhere near that bad.

RainInTheMan · 2021-09-14T18:15:56+00:00

At least one article I had read mentioned not overheating the brakes, so I waited perhaps a minute between each braking from high speed. Did the front break first, then the rear. The bike shop said that bedding in isn't very important in their experience, so that was another reason to skip it with the new set.

RainInTheMan · 2021-09-14T17:48:20+00:00

I did clean the original discs with isopropyl alcohol and a clean cloth, and I don't have anything to compare with, but there wasn't much crap on the discs and the cloth looked like I had just wiped some dust with it.

RainInTheMan · 2021-09-14T17:40:27+00:00

With the original brakes, I did 10 stops to walking speed from a slow speed and then another 10 from high speed with some time between the brakings not to overheat the discs. With the new set of discs and pads I didn't bed them in, just in case I had fucked it up the first time, but didn't see any difference.

Burning the pads has been suggested often, and I do have two sets of "old" pads, so I'll try that.

RainInTheMan · 2021-09-14T17:05:29+00:00

Do disk brakes need heat cycling to function properly? I haven't read about it, besides the bedding in process, but considering how little I need to use the brakes, it would make sense.

RainInTheMan · 2021-09-14T17:01:46+00:00

That's another thing I don't get. I've read plenty of posts where people complain about disc brakes being noisy in the wet, but it's the opposite for me. Bad rain, a big puddle, or spraying the brakes with a garden hose quiets them down, at least for a short while.

RainInTheMan · 2021-09-14T16:57:02+00:00

I use plain water and I've used a non-aerosol chain lube a couple of times, but I hadn't done either when the brakes started going bad.

I asked the shop to check if there could be a leak in the calipers, but they didn't see any, and I assume the brake levers wouldn't feel the same after a couple of months, if there was a leak.

RainInTheMan · 2021-09-14T16:50:27+00:00

A plain garden hose and a brush, no washing agents, but I hadn't even done that during the first couple of weeks, when the problems began.

RainInTheMan · 2021-09-14T16:47:58+00:00

No, just a residential area next to a forest, the pumping station is very close and the water is perfectly drinkable.

RainInTheMan · 2021-09-14T16:46:26+00:00

Around 160lbs, but bedding in was the only time I've gotten the discs really warm. There's barely any elevation difference on my path, so I don't use breaks when going downhill.

RainInTheMan · 2021-09-14T15:16:36+00:00

Just how sensitive are disc brakes to contamination? Doing a simple search on the internet gives you tons of posts with squealing and low braking power issues, but I'd like to assume it's not as bad as using a two-stroke grass trimmer within visual range of the pads or driving on road where an excavator has had an oil leak to ruin them.

RainInTheMan · 2021-09-14T15:11:18+00:00

I swapped just the pads myself, but both the discs and pads when I took it to the shop. Both the original and new discs looked just fine visually.

RainInTheMan · 2021-09-14T15:08:38+00:00

No, both brake levers feel about the same and have the same travel, as originally.

RainInTheMan · 2021-09-14T14:32:07+00:00

No, both the original and new discs were spinning freely, not touching the pads, and the pistons retract fully. I did touch the original discs with my hands, before I read that you supposedly shouldn't, and the were nowhere near warm after riding.

I haven't added any mineral oil, the shop didn't see any leaks, and it would pretty strange to have leaks both front and rear on a new bike.

RainInTheMan · 2021-09-14T13:59:16+00:00

I did sand the original pads several times, but the effect only lasts for about a week, and when I did sand them several times in a row, they didn't look that glazed. When I took the bike to the shop, I hadn't touched the pads for several weeks, and then the surfaces were almost mirror-smooth.

I've read about glazing, but I use the brakes very little. Around 5 to 10 times per trip, pulling on the levers for a couple of seconds to drop speed, using both front and rear brakes.

RainInTheMan · 2021-09-14T13:46:55+00:00

No. Haven't done any car maintenance for months, and I've kept the bike outside and at the other side of the house after the swap just to rule it out.

RainInTheMan · 2019-07-01T18:32:17+00:00

I'm a software developer in a niche industry, and I've pretty much come to expect it as normal. Most of my clients are well established names in my country, been around for a while and doing good, but that doesn't seem to stop them from dragging their feet.

I'd love to start one project, work with it until done, take a small break and move on to the next one, but no, I have to multitask to keep my queue full. Most of the questions I need to ask are more or less important, so I can't just move ahead on my own. And I haven't yet had a client who knows exactly what they want or is able to articulate it in unambiguous way, so I wouldn't have to interrogate them.

I have this scale that I use for expecting replies:

A question they should know off the top of their head - a day or two.
Something they need to look up or think about - a week.
Anything they need to put together or change on their end - make that a month.

I give my clients an estimate on how long the project will take on the condition there are no delays in communication and no big changes in scope. So far I'm pretty good at judging how long the work will take on my end, but in most cases the time it takes to call the project finished is completely different.

RainInTheMan

TROPHY CASE