標題: [測試] MagicTV 3200D 爆格 "沒有信號, 請檢查天線" [打印本頁]

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作者: ANWKLO    時間: 2018-10-27 23:29     標題: MagicTV 3200D 爆格 "沒有信號, 請檢查天線"

本帖最後由 ANWKLO 於 2018-10-27 23:42 編輯

近來部MagicTV 3200D firmware 11.7 間中自動boot機, 間中又會花畫臉(爆格) 同時顯示"沒有信號, 請檢查天線", 來天線入3200D 再出比 Panasonic Smart TV, 只開Panasonic 自己冇問題, 3200D 連接外置Seagate 2TB HDD, 請問是什麼原因

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作者: fkjohnny    時間: 2018-10-28 00:11

換火牛啦

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作者: ANWKLO    時間: 2018-10-28 11:35

本帖最後由 ANWKLO 於 2018-10-28 11:47 編輯


用他錶度過, 輸出維持係12V 以上


圖片附件: unit.jpg (2018-10-28 11:34, 148.71 KB) / 下載次數 111
https://h2.hkepc.com/forum/attachment.php?aid=2089374&k=4446c1ed783b21e6c8b502611e4b945a&t=1781794943&sid=18r4uBudOZ

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作者: anon893    時間: 2018-10-28 11:52

I have MTV7000Dmini (FW v11.6) and sometimes 花畫臉(爆格) occurs occasionally
Sometimes when that happens and when recording is in progress, the recorded file becomes corrupted and nothing can be done to fix the streams

Anyone knows if there's any tuner problem with the MTV?  Very scary......

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作者: ANWKLO    時間: 2018-10-28 12:38



My MagicTV 3200D also "Sometimes when that happens and when recording is in progress, the recorded file becomes 花畫臉(爆格)", however, can be played.

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作者: anon893    時間: 2018-10-28 12:49

本帖最後由 anon893 於 2018-10-28 12:50 編輯

The recordings can be played, but 爆格/花畫臉 still occurs at the affected areas
When that happens, if you edit the program stream in question in PC, you cannot get that fixed and the recorded program stream remains corrupted (even after attempted fixing)

That's why for certain programs with multiple reruns during the day (or week), I timeshift them ALL so that when one session becomes corrupted I still have the rest of the backup sessions to choose from (unless of course ALL sessions are corrupted)

What I fear most is the MTV's internal malfunctioning due to component failure (tuner, chipset, HDD etc. etc. etc.)

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作者: ANWKLO    時間: 2018-10-28 12:58



Yes, the 爆格/花畫臉 recorded files still occurs at the affected areas , BTW, does your  MTV7000D mini boot automatically sometimes

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作者: anon893    時間: 2018-10-28 13:29


Not that I know of...
The only time of auto reboot is during FW update

BTW any bug with FW v11.7?

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作者: anon893    時間: 2018-10-28 13:31


I use Smart Cutter to edit the stream frame by frame
However, any instance of 爆格/花畫臉 can only be noticed when the program stream is cleaned thru TSDoctor
When that happens, even VideoReDo cannot fix it

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作者: ANWKLO    時間: 2018-10-28 13:39



No auto reboot with FW V11.7, however only a few days since updating

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作者: anon893    時間: 2018-10-28 17:38


Just updated FW to 11.7, yes there's still occasion 爆格/花畫臉/freeze frame problem and at some point gets worse

At some point there's even black screen with "no signal warning" even when "ANT IN" is connected
Retried a few times and right now signal seems normal... not sure what's happening
If it's internal chipset failure or overheating problem then things can only get worse

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作者: fkjohnny    時間: 2018-10-28 22:22



電流輸出唔夠啊

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作者: ANWKLO    時間: 2018-10-28 22:51



輸出高過本身12V



圖片附件: unit 2.jpg (2018-10-28 22:51, 126.7 KB) / 下載次數 100
https://h2.hkepc.com/forum/attachment.php?aid=2089515&k=156ed2d1750e10c55adfb63730e2f327&t=1781794943&sid=18r4uBudOZ

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作者: ANWKLO    時間: 2018-10-28 22:56



Today No 爆格/花畫臉 observing for few more days

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作者: TH30    時間: 2018-10-28 22:58



這是空載輸出？

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作者: ANWKLO    時間: 2018-10-28 23:18



火牛通電後只接上他錶

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作者: domeso    時間: 2018-10-28 23:23




    That means, empty load, and that also means the measure is not useful.

Also, interference from some faulty PSU does degrade / interfere TV signal a lot.

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作者: domeso    時間: 2018-10-28 23:26

Also, check overheat, I do notice 3100 / 3200 has this issue when it is overheat due to loads on decoding data. (playback)

Try a mini USB fan blowing into the device via ventilation holes.

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作者: TH30    時間: 2018-10-28 23:32



我不是說，不足火是爆格的原因
但要排除不足火這一點，要有load扯住時也足火，才有意思
空載一定夠12V的
最好換另一隻質素好的火牛試機，或者你可以用死雞HDD隻火牛交叉測試

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作者: anon893    時間: 2018-10-29 14:26

Recently rescanned channels on MTV7000d/mini and ch81 is GONE!!
Anyone knows what's happened??
HELP...

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作者: ANWKLO    時間: 2018-10-29 18:42



May be the overheat problem, I notice there is no fan over the heatsink, Is it possible to add a fan or change to a large size heatsink?



圖片附件: magictv.jpg (2018-10-29 18:42, 147.52 KB) / 下載次數 93
https://h2.hkepc.com/forum/attachment.php?aid=2089637&k=2d17c6a931db0031a437bec1576562e1&t=1781794943&sid=18r4uBudOZ

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作者: ANWKLO    時間: 2018-10-29 18:46



多謝師兄提醒

火牛通電後接上MagicTV 3200D, 他錶接上3200D電制, 未開3200D 電制, 度到9.851V, 開3200D 電制後度到0.0300V


用死雞HDD隻火牛, 火牛通電後只接上他錶12.27V.  
火牛通電後接上MagicTV 3200D, 他錶接上3200D電制, 未開3200D 電制, 度到9.416V, 開3200D 電制後度到0.0238V

圖片附件: magictv 2.jpg (2018-10-29 18:46, 136.65 KB) / 下載次數 101
https://h2.hkepc.com/forum/attachment.php?aid=2089638&k=3d40da05349ab54da17637ce58073e14&t=1781794943&sid=18r4uBudOZ

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作者: hkcws1010    時間: 2018-10-29 22:10

回覆 1# ANWKLO
Ching 我個3200D近來都係咁 電視係Panasonic ex750 經常冇訊號

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作者: ANWKLO    時間: 2018-10-29 22:28



天線是否串聯? 只開Panasonic 自己有冇問題

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作者: wklie    時間: 2018-10-30 09:41

本帖最後由 wklie 於 2018-10-30 15:12 編輯

回覆 22# ANWKLO

Assuming both your power supplies are not faulty and are capable of the current draw, the power switch or the motherboard is faulty.

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作者: ANWKLO    時間: 2018-10-31 08:27



Tried another 12V 7.5A power transformer, sometimes 爆格 "沒有信號, 請檢查天線"

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作者: KinChungE    時間: 2018-10-31 09:28



似底板電容老化
我之前都有部3100係咁
開多陣會爆格, 再耐D越爆越勁
熄佢一陣再開又冇野

有人試過同我一樣情況, 換cap後就好翻

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作者: ANWKLO    時間: 2018-10-31 10:42



除了爆格 , 有無"沒有信號, 請檢查天線"?

又不是日日出現爆格 ,"沒有信號, 請檢查天線", 有時一日都冇, 有時一日出現一兩次, 有時幾次頻密的

底板電容都有廿幾粒, 全部要換

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作者: ANWKLO    時間: 2018-10-31 10:50

請問版主這帖子是否要移去DIY區

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作者: anon893    時間: 2018-10-31 11:36


Looks like the symptom on my MTV7000d/mini
Even worse, ch81 and 77 are missing after multiple scans

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作者: ANWKLO    時間: 2018-10-31 12:09



Try manual scan for  ch81 and 77

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作者: drlui    時間: 2018-11-1 12:40

TRY USE 15V 3A 牛
我用12V牛會有樓主問題(已加放大器)，改左15V後已經正常了(已用 OVER  3 YEAR) 15V 3A
PS 改用15V牛後，天線LOOP BACK OUT 會吾WORK 如有需要RF OUT 請有TV IN 前加一開二分線頭)

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作者: anon893    時間: 2018-11-1 13:55


Tried but to no avail...

Eventually sent in unit to PM yesterday, technician said unit wouldn't even power up (WTF!!)
The 7000d/mini was still working in the morning

Tech told me it would take a week or so for COMPLETE inspection... said at worst MB might need to be replaced...

Should I ask them to replace the AC adapter as well?

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作者: ANWKLO    時間: 2018-11-1 14:37



Still within warranty period?
Why not sent them the AC adapter as well?
It seems the MeanWell AC adapter has good reputation.

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作者: ANWKLO    時間: 2018-11-1 14:40



15V 冇問題 還以為會燒底板

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作者: anon893    時間: 2018-11-1 15:39

本帖最後由 anon893 於 2018-11-1 15:40 編輯

AC adapter was sent in as well (per CS advice on the phone previously)
Tech said some oxidised deposits were spotted on the DC out jack

Tech tested my adapter first, then their adapter, both wouldn't power up my box

And of course the unit is out of warranty, but what can you do?
Get a brand new one (esp. MTV8000D)??

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作者: ANWKLO    時間: 2018-11-1 16:06



It depends on the repairing costs

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作者: dirtyman1984    時間: 2018-11-1 16:36

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作者: lamtaiman    時間: 2018-11-1 17:07



會不會很hot?

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作者: drlui    時間: 2018-11-1 18:54

有小小(冇開冷氣)我覺得正常
一晚通常開3-4個鍾

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作者: Midas    時間: 2018-11-2 16:53

本帖最後由 Midas 於 2018-11-2 16:55 編輯

回覆 4# anon893

師兄， I had totally given up Magic TV. I bought mytv super @ HKD 510 and am very happy with the performance。 打十號風球都睇到嗰度好， feed it with a good linear power supply
由有 數碼電視 開始買 magic tv，已經用咗大概十部 mtv，感覺喺越嚟越衰越嚟越差。又唔喺啲乜嘢 rocket science 嘅東西都攪成咁！

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作者: ANWKLO    時間: 2018-11-2 21:42

這幾日換了3200D個火牛, 用QNAP個12V 7.5A火牛, 間中仍然出現 爆格 "沒有信號, 請檢查天線" 即是排除了3200D個火牛有問題

想想下會唔會連接3200D外置Seagate HDD 火牛有問題, 現在用QNAP個12V 7.5A火牛插外置Seagate HDD 睇下有無問題

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作者: kcyipgar    時間: 2018-11-3 09:32


是時候換新機了，我估係老化現象。

我第一部MTV3000用咗10年，臨終時亦係出現過爆格，過一陣就hang機定格，就算換火牛都冇起色。

建議買MTV9100D，新型號比舊型號快，亦多咗嘢玩。

via HKEPC Reader for Android

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作者: TH30    時間: 2018-11-3 10:04



數碼電視廣播好似係十年左右，你十年換十部mtv？
　

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作者: ANWKLO    時間: 2018-11-3 10:31



可係老化現象.

現在用緊4K Smart TV, 都有好多功能, 暫時觀察3200D用住先

MTV9100D 可否分享HDD錄影了的節目給電腦睇

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作者: anon893    時間: 2018-11-3 14:41


PM called me this morning, said there's problem with the power contact (or whatever)
Meanwhile, AC adapter has no problem, only needs some cleaning of contacts...
Also, reception has NO problem (said they could receive all channels), HDD may have some bad sectors but otherwise still acceptable...

There's just one more thing that I need to test...... (more on that later)

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作者: ANWKLO    時間: 2018-11-3 19:23



It is strange, it means there is problem at your home

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作者: CMZ    時間: 2018-11-3 20:53




    睇唔睇到 31台 77台 99台?

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作者: JeremyYim    時間: 2018-11-4 01:44

本帖最後由 JeremyYim 於 2018-11-4 01:55 編輯

我部3200S讯号强度同埋质量都系0,,,宜家都唔知点做好


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作者: ANWKLO    時間: 2018-11-4 11:11



唔經3200S, TV本身有無訊號

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作者: anon893    時間: 2018-11-4 13:44


In my vicinity I realised that UHF22 that covers ch818/96/99 is very weak, but the MTV tuner picks that up during autoscan...
As a result, there's problem with reception of these three channels

However, during subsequent scans (from the TV directly) these channels are covered by UHF41 which has a much stronger (and normal) reception, but somehow the MTV doesn't pick that up (I have a backup MTV5000 to test)

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作者: anon893    時間: 2018-11-4 13:47


You may have to do a manual scan (see post 51)

IN my case, I have to get into the TV's settings to identify the UHF frequencies that cover the channels concerned

In my case:
UHF35 - ch31/32/33
UHF41 - ch81/96/99 (no 77)
UHF62 - ch82/83/84/85

Of course, these frequencies depend on region, so if autoscan fails, then you'll have to do manual scan, which can be a PIA

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作者: anon893    時間: 2018-11-4 13:50


NO
My 7000 was still operating the day I sent it in to PM
Only after the unit was picked up by the tech guy did he learn even the power (adapter DC?) contact is iffy

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作者: lamtaiman    時間: 2018-11-5 13:29



已經用了好多年? 老化?

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作者: hkaiw    時間: 2018-11-6 11:24

我家中部3700D近幾年的接收也是變差，但是父母睡房內的LG電視機及8000D卻沒有問題，會否也是火牛老化所致（因為8年來都無換過火牛，但是2部7000D火牛卻換過至少1次，總計在科學園買過3隻，而8000D暫時也未換過火牛）。

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作者: siufat    時間: 2018-11-6 11:41

我部3200D 睇耐左, 時不時就會定格, 如定格時錄影中,  數字會跳, 可以熄機;
再開又正常返....過一陣又定格....但有時又睇得好順...無定格....
想問下各位大大, 點解決好...???

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作者: wklie    時間: 2018-11-6 12:47

本帖最後由 wklie 於 2018-11-6 12:49 編輯


You can try to replace the power supply, but there is no guarantee it will solve the problem.

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作者: wklie    時間: 2018-11-6 12:50



Please take it to repair.

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作者: anon893    時間: 2018-11-6 15:42


It may be the power switch module on the unit that is causing problem, NOT the PSU (adapter)

If in doubt, a customer should bring in the AC adapter as well where the tech will check it on-site

Most likely it's the power switch module that is causing contact problem after very long use
Replacement costs $200

If however it's determined that the MB is faulty, then replacement of MB could go up to ~$1.4k

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作者: rayhk2012    時間: 2018-11-6 16:02

我部3200S 用左6-7年, 呢輪一係收唔到,一係爆格, 一係冇signal.

Reboot 完好一陣又會咁..

應該都夠晒期換機了

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作者: anon893    時間: 2018-11-7 14:11


I still have first gen MTV5000 from years ago and so far the only repair was the power switch module back in 2015...
Unit is still going strong, although I only use it for backup in recording

One thing to note though: the channel autoscan feature on the MTV unit sometimes does not work well
If you end up with bad channel reception, maybe you should do a manual scan just to be sure

My advice however is still to send in the 3200S for full diagnosis
Unless spare parts are dwindling for this model, I'd still prefer having it repaired if that's the case

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作者: rayhk2012    時間: 2018-11-7 15:18




用左咁耐, 乜都抵晒, 唔想放錢做維修了

琴日已經買左9100

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作者: fkjohnny    時間: 2018-11-7 17:34

我仲係用緊3000咋,廳一部,房一部,超過十年,期間淨係換過2次火牛

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作者: citibatter    時間: 2018-11-9 13:22

My old MTV 5000 had a power switch failure.  I bought it back to PM and it was replaced for $150, 5-6 years ago.

Last year it failed again and I just bypassed it by directly attaching the two wires. Had been working fine since then.

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作者: JeremyYim    時間: 2018-11-17 03:43

回覆 54# lamtaiman


    系。中間自己換過火牛

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作者: JeremyYim    時間: 2018-11-17 03:45

回覆 50# ANWKLO


    有訊號，仲收的好好添

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作者: JeremyYim    時間: 2018-11-17 03:48

回覆 52# anon893


    Not working

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作者: anon893    時間: 2018-11-17 17:48


You have to determine which TV channels fall into what UHF frequencies first
Then you can pinpoint those UHF channels accordingly
If you manually seek from UHF 21-69 then it's a real PIA

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作者: 留白兄    時間: 2018-11-17 18:01

之前部3300D個antenna in 接觸不良
係wklie師兄既幫助下整返好
感覺個位好易鬆 唔知今次關唔關事

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作者: JeremyYim    時間: 2018-11-22 06:48

回覆 68# anon893


    The frequency is right because my TV is in same frequency

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作者: anon893    時間: 2018-11-22 14:39


Check "antenna in" cable etc.
Any ageing with such cable may cause problems

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作者: JeremyYim    時間: 2018-11-23 04:45

回覆 71# anon893


    It might be but I'm using Loop Out port to connect to my TV,and TV is working properly:)

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作者: anon893    時間: 2018-11-23 18:40


Wiring and connectors can be a problem after prolonged use
If any connectors get loosened then they should be replaced ASAP
Same thing with wiring

In your case your box should be functioning properly, unless something really nasty happens (eg. chipset failure, power switch module failure etc.)

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作者: diy-apprentice    時間: 2018-11-23 22:12

我都有一部3200D多年前有類似的問題，有一日係完全搵唔到台，掃過幾次都唔得。經已打定輸數，買左一部3300D回來作替換。之後就換左部新機用，舊機就放埋一邊唔理佢，過左一個月左右，拿番部3200D出來再玩一次，竟然係正常番晒，可以搵到台和正常操作，並且用到而家，只係間中會reboot和有時detect唔到USB HDD。而家我都係新舊兩部機一齊用，到3200D真係又再唔work時，唯有送返去做維修或買過另一部算數。

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作者: anon893    時間: 2018-11-23 22:46


Could be some sort of contact problem inside the box
Better send it to check, otherwise when spare parts are all discontinued you'll be left with no choice but to get a new one

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作者: gnuek    時間: 2018-11-23 23:50

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作者: god_md5    時間: 2018-11-27 19:35

電容換邊幾粒,好多粒喎,自己換得唔得??

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作者: JeremyYim    時間: 2018-11-28 08:24

回覆 73# anon893


    Will restart by using the switch in the back work?

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作者: anon893    時間: 2018-11-28 21:40


In my case, NO

Had to send in unit for full diagnosis, then it was discovered power switch module was faulty

If in doubt, sending in unit for full diagnosis is still the best solution

via HKEPC Reader for Android

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作者: JeremyYim    時間: 2018-12-2 00:05



    Have you ever tried repairing by yourself before?

via HKEPC IR Pro 3.4.0 - iOS(2.3.3)

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作者: anon893    時間: 2018-12-2 14:15


Sorry I don't have the necessary skills for that...
I'll just leave that to the pros either at PM or that shop at New Capital 2/F

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