Vizio SV470M IR sensor problem

[Shane711]

Re: Vizio SV470M IR sensor problem

OK, so the remote will NOT work. My next guess is a bad capacitor. I will have to change one at a time to see which one is causing the problem.

It seems the capacitors on the main board are overheating. I left it on for a while and the capacitors are very hot. I know from experience that this causes them to fail. I will have to check them all and install a fan cooling the main board. If anyone wants to install a fan on their TV I do it an easy way. I buy these LM317 DC-DC step-down DC converters for $0.60 each and install them with the fan, this way I can control the speed. I wire it up to a 12 volt source on the power board.

[sansonet]

Re: Vizio SV470M IR sensor problem

let me know if you will find it out. I saw on ebay "Main Board Repair Kit", I wonder what components are in it http://www.ebay.com/itm/VIZIO-Main-B.../141023628832?

[Shane711]

Re: Vizio SV470M IR sensor problem

That kit looks like it contains the EEPROM and the voltage regulators, I do not think that will solve the problem with the remote. It may be a week before I can get back to this TV. There are some other things I have to prioritize first.

[sansonet]

Re: Vizio SV470M IR sensor problem

Do you have orange logo light even when TV is on? My old mainboard did that. I still think EEPROM might fix it, but not crazy to invest in it too much just to try it.

[Shane711]

Re: Vizio SV470M IR sensor problem

No, the TV works great, only the remote stopped working. Usually when your logo stays orange it means you have a bad voltage regulator. Those are the parts you were testing earlier in this thread.

[sansonet]

Re: Vizio SV470M IR sensor problem

TV with that mainboard worked fine too, but logo stayed orange all time - whatever TV is on or in standby mode. After replacing mainboard, it started turning white when TV is on.

[Shane711]

Re: Vizio SV470M IR sensor problem

That board has a bad voltage regulator, that is usually what causes it.

[sansonet]

Re: Vizio SV470M IR sensor problem

But testing not shows any problem with them? Or it did?
I think both problems - glitchy remote response and always orange logo are caused by the same component

[Shane711]

Re: Vizio SV470M IR sensor problem

Well that is possible. I will have to look at what budm said about testing these, there is a formula. The output voltage is equal to (Input voltage minus the adjustment pin), something or another. Budm knows, maybe he can repost that formula here.

[attainteddragon]

Re: Vizio SV470M IR sensor problem

ldo regulators are 1.25v higher output, to reference pin, unless it is a fixed regulator.

have you checked for a signal change on the harness that goes from the button board to the main. i couldn't recall if you had.

[sansonet]

Re: Vizio SV470M IR sensor problem

It was 3 years ago so I hardly remember details. Plugged it today - I was wrong about "always yellow logo" - its actually always white, even when TV is off.
Shane, did you program EEPROM on board without removing it? I saw on alexpress simple programmers for ~$2 and clips for additional $2, which is cheap and I could try that, even if it not works for this mainboard, I might use it for something else later

[Shane711]

Re: Vizio SV470M IR sensor problem

Buying a cheap EEPROM programmer is not the way to go. I ended up buying 3 until I got a good one. The best one I have is a ( SOFI SP8 USB Programmer ). Then I have another one that I need for special EEPROMs, it was like $70 and it is only good to me for 1 EEPROM. It seems like you can't just buy 1 and if you want one that does most EEPROMs then you might have to pay over $300.

In my experience it is not good to copy and program the EEPROMs while they are on the board

[sansonet]

Re: Vizio SV470M IR sensor problem

You probably do professional repairs, but I fix something occasionally, investing in expensive programmer probably will never pay for itself if I will use it just couple times in lifetime
Reviews are not bad for this one https://www.aliexpress.com/item/CH34...88496935.html?
On amazon too https://www.amazon.com/SMAKN-Program.../dp/B013Q5P3ES

[Shane711]

Re: Vizio SV470M IR sensor problem

If you do not buy at least the SP8 then you will be buying another one when you find out the cheap one you bought will not program the EEPROM you have. The cheap ones only do a few EEPROMS.

[sansonet]

Re: Vizio SV470M IR sensor problem

I dont know, in any case - not big loss if it dont, but this one have this list of supported chips, and one in that vizio board is is MX25L3205D, which is listed

AMIC, A25L05P, A25L20P, A25L16P,

ATMEL, AT2SF512, AT25F1024A, AT26F004, AT250F161, AT25DF641, =====, A25L512, A25L40P, A25L016, AT25F512B, AT25F2048, AT260F041A, AT260F161, A25L10P, A25L040, A25L032, AT25F512A, AT25DF021, AT25FS040, AT26DF321, A25L010, A25L080, AT25F1024, AT25DF041A, AT260F081A, AT25DF321A, A25L020, A25L80P, AT2SFS010, AT25F40%, AT260F161A, AT25DF321,

COMMON 25X005 25X80 25X256,

EON EN2SB05 EN25F10 EN25LF20 EN25T80, EN25Q16 EN2ST16 M2SQ32 EN2SB64,

ES, ES25P10 ES25M80A ES2SM16A, ESMT E25L04UA E25L16PA,

gigadevice, GD25Q512 GD25Q80 GD25Q32, KH, KH2514006E,

mshine, MS25X05 MS25X16, MXIC, MX25V512, MX25U4035(OTP), MX25V8006E, MX25L8035E, MX25L1633E, MX25L1608E(OTP), mX25L3206E(OTP), MX25U3235F, mX25L6408E(OTP), MX25L1286, E(OTf>), HX2SL128SSE(OTP),

hexflash, HX2SP10 NX2SP32, 25X05 25X10 25X20 25X40, 25X16 25X32 25X64 25X128, 25X512 25X1024 25X2048, EN25F05 EN25B05T EN25P05 EN25LF05, EN25P10 EN25D10 EN25LF10 EN25D20, EN25F20 EN25F40 EN25D40 EN25LF40, EN25D80 EN25Q80 EN25F80 EN25P80, EN25H16 EN25B16T EN25F16 EN25D16, EN25B16 EN25F32 EN25P32 EN25B32, EN25832T EN25B64T EN25Q64 EN25F64, EN25F128 EN25Q128, ES25P20 ES25M40 ES25M40A ES25P40, ES25M80 ES25P80 ES25P16 ES25M16, ES25P32, F25L004A F25L08PA F25L008A F25L016A, F25L32PA F25L32QA F25L64PA, GD25Q10, G025D80, GD25Q64, KH25L80360, MS25X10, MS25X32, GD2SQ20, GD25F80, GD25Q128, GD2SD40, GD25T80, GD25F40, GD25Q16, KH25L8006E(OTP) KH25L1606E(OTP), MS25X20, MS25X64, MS25X40, MS25X128, MS25X80, MX25L512 MX25V4035 MX25V8005, MX25U803S<OTP) MX25L1608CKOTP) MX25L1636D, MX25L3205D MX25L3208E(OTP) MX25L6406E(OTP), MX25L12835E MX25L12845E(OTP), MX25L1005 MX25L2005, MX25L4005A MX25V400S, MX25U8033E MX25L8036E, MX2 5 L8006E(OTP) MX25L1636E, MX25L1635E MX25L3225D, MX25U3235E MX25L6455E MX25L6445E(OTP), MX25L12836E(OTP) MX25112805D(OTP), MX25U1635E, MX25L3237D, MX25L3208CXOTP), MX25L6408CXOTP), MX25L6405D, MX25U12835F, MX25L2026, MX25L8005, MX25V8035, MX2SL1606E(OTP) MX25L1605D MX25L3236D MX25L3235D, MX25L6465E(OTP) MX25L6436E(OTP) MX25L12835F(OTP), MX25L2563SE(otp), NX25P20, NX25P40, NX25P80, NX25P16,

PMC, PM25LV512A, PM25LV016B, PM25LV010A, PM2SLV020, PM25LV040, PM25LV080B,

SAIFUN, SA25F005, SA25F160, SPANSION, S25FL0O1, S25FL160, S25FL129,

SST, SST25VF512A, SST25VF020A, SST25VF0168,

ST, SA25F010, SA25F320, S25FL040, S25FL016, S25FL256, SST25VF512, SST25VF040B, SST25VF032B, SA25F020, S25FL002, S25FL032, S25FL512, SA25F040, S25FL004, S25FL064, SA25F080, S25FL008, S25FL128, SST25VF010A, SST25VF040, SST25VF064C, SST25VF010, SST25VF040A, SST25VF020, SST25VF080B, M25P05A M25P40 M25PE16 M25PE32, M25PE10 M25PE40 M25P16 M25P64, M25P10A M25PX80 M25PX16 M25PE64, M25PE20 M25PE80 M25PX32 M25PX64, M25P20 M25P80 M25P32 M25P128,

WINBOND, W25P10 W25X20A W25Q40BV W25P40 W25X80AL, W25Q16V W25Q328V W25Q128BV W25X10A W25X20L, W25X40 W25P80 W25Q80V W25P16 W25Q64BV W2SQ256FV, W25X10AL W25X20 W25X40AL W25Q80BV W25X80 W25P32, W25X64 W25X10L W25X20AL W25X40L W25X80L W25X16, W25Q32V W25P64 W25X10 W25P20 W25X40A W25X80A, W2SQ166V W25X32 W2SQ128FV,

= ATMEL, AT24C01B AT24C01, AT24C02B AT24C04B, AT24C08B AT24C08, AT24C32B AT24C32A, AT24C64B AT24C128, AT24C256 AT24C256B, AT24C1024 AT24C1024A, CATALYST, CAT24C01, CAT24WC04, CAT24WC32, CAT24WC128, CAT24C1024, CAT24WC01, CAT24WC08, CAT24C32, CAT24C256, CAT24WC1024, AT24C01A, AT24C04, AT24C16, AT24C32, AT24C128A, AT24C512B, AT24C1024B, CAT24C02, CAT24C08, CAT24WC64, CAT24WC256, AT24C02, AT24C04A, AT24C16A, AT24C64, AT24C128B, AT24C512A, CAT24WC02, CAT24WC16, CAT24C64, CAT24C512, AT24C02A, AT24C08A, AT24C16B, AT24C64A, AT24C256A, AT24C512, CAT24C04, CAT24C16, CAT24C128, CAT24WC512,

COMMON, 24C01 3V 24C01 5V 24C02 3V, 24C04 5V 24C08 3V 24C08 5V, 24C32 5V 24C32 3V 24C64 5V, 24C128 3V 24C256 5V 24C256 3V, 24C1024 3V 24C1024 5V 24C2048 5V, 24C4096 3V,

FAIRCHILD, FM24C01L FM24C02L FM24C03L, FM24C08L FM24C09L FM24C17L, FM24C64L FM24C128L FM24C256L, HOLTEK, HT24C01 HT24LC01 HT24LC02, HT24LC04 HT24C08 HT24LC08, HT24LC32 HT24C32 HT24LC64, HT24LC128 HT24LC256 HT24C2S6, HT24C1024 HT24LC1024,

ISSI, IS24C01 IS24C02 IS24C04, IS24C32 IS24C64 IS24C128, IS24C1024, 24C02 5V 24C16 5V 24C64 3V 24C512 5V 24C2048 3V, FM24C05L, FM24C16L, FM24C512L, HT24C02, HT24C16, HT24C64, HT24LC512, 24C04 3V 24C16 3 V 24C128 5V 24C512 3V 24C4096 5V, FM24C04L, FM24C32L, FM24C1, HT24C04, HT24LC16, HT24C128, HT24C512, IS24C08, IS24C256, IS24C16, IS24C512,

MICROCHIP, MIC24LC014, MIC24AA02, MIC24LC04B, MIC24LC16B, MIC24AA64, MIC24AA256, MIC24FCS12,

NSC, NSC24C02L,

RAMTRON, FM24CL04, FM24C64,

ROHM, BR24L01, BR24C04, BR24L32,

ST, ST24C01, ST24C32, MIC24AA01, MIC24C02C, MIC24AA04, MIC24AA16, MIC24FC64, MIC24LC256, MIC24AA1024, NSC24C02, FM24C04A, FM24C256, BR24C01, BR24L08, BR24C32, ST24C02, ST24C64, MIC24AA014, MIC24AA024, MIC24AA025, MIC24LC32, MIC24FC128, MIC24FC256, NSC24C64, FM24CL16, FM24CL256, MIC24LC01B, MIC24LC025, MIC24LC08B, MIC24AA32, MIC24AA128, MIC24AA512, BR24L02, BR24C08, BR24C64, ST24C04, FM24C16A, FM24C512, MIC24LC02B, MIC24LC024, MIC24AA08, MIC24LC64, MIC24LC128, MIC24LC512, FM24CL64, BR24C02, BR24L16, BR24L64, ST24C08, BR24L04, BR24C16, ST24C16,

XICOR, X24C01, X24C02 X24C04, X24C08 X24C16

[Shane711]

Re: Vizio SV470M IR sensor problem

I think the SP8 does over 5,000 chips, well worth the money. It is around $50 give or take.

[ecking767]

Re: Vizio SV470M IR sensor problem

Your problem maybe CPU related, and not the EEPROM. I have seen this happen on the Vizio VF551XVT where the main board is fully functioning but the remote doesn't work.I try the EEPROM and the problem wasn't fix. I had to replace the CPU. I believe the port was blown on the CPU.

also there is much to check, only a couple of caps and couple resistors and then trace goes directly into the CPU

Do you know the part number of the CPU, It maybe a MEDIATEK MT5292SUVJ.

if you remove the heat sink from the CPU you will need a Hot air gun to safety loosen the glue

[Shane711]

Re: Vizio SV470M IR sensor problem

The CPU is a MT5392UVSJ. So you replaced the CPU and the problem was fixed? $43.00 for a new CPU. And I have not been successful at changing one out yet. I can not get the solder balls to stay in place. I need more practice first. Looks like this problem is not worth the trouble and I will add a cooling fan to the CPU to prevent any further damage.

[ecking767]

Re: Vizio SV470M IR sensor problem

The CPU is a MT5392UVSJ. So you replaced the CPU and the problem was fixed? $43.00 for a new CPU. And I have not been successful at changing one out yet. I can not get the solder balls to stay in place. I need more practice first. Looks like this problem is not worth the trouble and I will add a cooling fan to the CPU to prevent any further damage.

Yes that the one MT5392UVSJ, I gave the part number off memory. I had trouble with these CPUs coming from China, most of the was bad stock. I will recap the power supply for sure do to the age of the TV.

The CPU (the bad one) I replace had a dull solder pad where the solder ball goes, this contact is where the remote sensor was going, looking at it with a magnifying glass is look burn out.

yes, its a challenge to reball CPUs, its take time and patient. plus no one make any template for MEDIATEK CPU for TV.

[sansonet]

Re: Vizio SV470M IR sensor problem

I finally received programmer from China, that was almost 2-month long delivery due to USPS, I guess - tracking said it arrived to US on August 25 but they delivered it just yesterday. I got it to read and reprogram chip, but appears that it not fixed problem too - when I plugged TV, standby light is white again - not yellow as it should be. TV turns on with buttons and I might try remote tomorrow, but since standby light is wrong color again, Im sure problem still exists.