duminică, 18 aprilie 2021

Multimetrul



Daca esti in cautarea unui multimetru sau doresti sa vezi si alte pareri despre multimetrele din laboratorul propriu, arunca o privire pe analiza de pe acest SITE.
Cate "zambete" aveti in "casa"? Orice comentariu va fi apreciat!

marți, 13 aprilie 2021

FDP6030BL / FDB6030BL - datasheet

luni, 15 martie 2021

eMMC - conexiuni ISP


Continut (cautati cu CTRL + F):

1-980-833-11 SONY 1-980-837-11 1-980-837-21 SONY 1-981-926-21 Sony kd-43xe7096 1-982-096-11 Sony KD-55A1 1-984-326-21_Sony XBR-85X950G_BM3J19 5R29A466MN Lenovo 50E62 40-MT56FD-MAF2LG 40-MT56SE-MAB2HG 40-MT56T2-MAC2HG 40-MT56T2-MAF2HG 2016 40-MT58L1-MAB4HG 40-MT565SE-MAB2HG 40-MT5603-MAD2HG 40-OMT507-MAE2LG 40-OMT507-MAE2LG_ 40-RT9507-MAD4HG 40-T962A1-MAD2LG 40-T962A2-MAB4HG 40-T96804-MAB2HG 42A21 32A21??LX-A21 a21 LENOVO 358M2C3-Vinga S32HD22B 715G6165-M0G-000-005X 715G7211-M01-000-004M 715G7772-M0D-B00-005K 715G7924-M01-B00-004Y Philips 55PUF6701 T3 715G8132-M02-B00-005K 715G8446-M1A-001-004Y 715G8709-M0E-B00-005N TPM17.7E Philips Model 43PUS6162 715RLPCB0000000055 715RLPCB0000000303A QV14.1E LA 4704-M638T8-A2233K01 5800-A5M93T-0P00 iris 42e790s 4K 5800-A5M910-OP10 STV-LC50S660FL 5800-A7M46T-0P10 32HA0A00 5800-A8A230-0P00_VER00.02 Skyworth 55V6 5800-A8H870-1P20 Skyworth 43G7200; 49G7200; 55G7200. 5800-A8M090-0P50 Skyworth 32E600Y 5800-A8R790-0P00 5800-A8S520-0P20 Skyworth 65E510E 5800-A8S600-0P30 5800-A8S620-0P40 Skyworth 40E3500; 43E3500; 40E510E; 32E510E. 5800-A9R100-0P20 Skyworth 50E690U 5800-A9R200-0P70 5800-A9R430-0P50 5800-ART30T-OP00 5844-A9K02T-0P10 VER00.08 20180 Main V1.0 HAIER M-LE32U5000A 35016964 LED42R6100PDE 35017841 35018369 2013-7-23 rev-01 35019392 KONKA 35019879 35021076 KONKA 32K35A 35022415 0091802184A Haier LS55H510X 0091802888B V1.2 HAIER 0091802888C V1.2 HAIER 1001246085_Kdl-43w807 A.20.ALCH228-13-0X A2071530A sony KDL-43W807 BN41-01587 BN41-01587E_ISP BN41-01622B BN41-01800A_B BN41-01950C BN41-01958B UE40F6330AKXRU BN41-02186 BN41-02205B BN41-02206B - UHD_7K_NT14U_NT72323 BN41-02241A BN41-02307A UA32J4300AR BN41-02345A UA55JU5900JXXZ UA55JU5920J UA55JU5910J BN41-02528A BN41-02695A BN41-02750A UA32T5300AU_ BN91-09186S UN40ES6500G CV338-A32 A42 A50 CV338H-A42 CV338H-B32 CV358H-A50_CV358H-B42 CV608-APW CV628H-A50 CV628H-T42 CV638H.B CV638H_B50 CV638H-E42 CV648H-D (1) Sharp LCD-45TX4100A CV801LE-B CV828H-D CV950H-A42 CV950XH-C42 D6000_4455747 DKTV-B-EE-AG-20140610-M Xiaomi MI L49M2-AA DP.6A358.PB813 DUNTKG743 EAX64434208-1.0 EAX64503906(1,0) LG47LM860V EAX64872105(1.0) LG50LA6210 EAX64872105 EAX65085303(1.2) 26LN467U EAX65167303(1.0) LG 55LA9650 EAX66165202 LB53H EAX66482504 (1.0) EAX66564304(1.0) EAX67246603 (1.0) EAX68253605 (1.1) EAX6713340411 55UJ635V 43UJ630V 49UJ630T 49UJ634V EBT62433220 42LA6910-tb Hisense_Vision_TV HJTFTYF HK.T.NT72667V01 HK.T.RT2841P838 HK-T.RT2968P61 HK-T.RT2995V01 JUC7.820.00105470 JUC7.820.00180917 Changhong UD55GHE6000-Ai JUC7.820.00181680 JUC7.820.00210955 JUC7.820.00263530_AN.M6683-FT LDD.H510.A _. U15-Hi3751. U23-THGBMHG6C1LBA1 JVC LT-55N776 LG 32M6400 MS6A918-MBD-C-H5300 MS6A928-MBD-C-H5100 MS6A938F-MBD-A-H5000 MS6A938-MBD-H-H2000 MS6A938-MBD-L-H5000 MS65860-ZC01-01 TELEFUNKEN TF-LED55S37T2SU MSA6282-ZC01-01 MSA6286-ZC01-01 Haier LE55B510N MSA6380-ZC01-01 Haier LS55H310G MSD6A628-T4C1 MSD6A628-T8E3 MSD338STV5.0 MSD638JSM V6.0 MSD6586-T8E2 MT55CD L42F3700A MT5507.PB801 N.M338.801 P45-338V3.0 P50-358V3.0 P75-338V6.0 P75-338V6.2 P75-628VX.V6.0 Vesta LD32B802S P75-2831V6.0 Panasonic 43GS500DX QT5A3LP V1.1 RSAG7.820.6016 RSAG7.820.6526 RSAG7.820.8063 RSAG7.820.8831 (1) Hisense H65B7300 S40-AIR-MB-H5100 SR29A4634X QPWBXE48WJZZ2 SHARP T.AM7366M6.71 Sanyo 55CE590A1 T.AM7366M6.82 Haier D58LW7110 T.HV510.81 T.HV553.81 T.MS338.733 T.MS638.U802 T.MS828.U802 T.MS6586.U783 T.MT5508.U801 T.MT5510S.PB782 T.RT2982.81 T.RT2982.702 Haier H48E07 TB681V1.0-A TNPH1160 1A TX-55dx600E_ TP.ATM20.PB819 TP.ATM30.PB801 TP.ATM30.PB818 part.1 TP.ATM30.PB818 part.2 TP.HV510.PB751 TP.HV510.PC822. TP.HV510.PC822 TP.HV530.PC821 TP.HV553.PB801 TP.HV553.PC821 TP.MS338.PB818 TP.MS338.PB819 Akai UA24DF2110S TP.MS338.PC822 TP.MS338E.PB803 TP.MS358.PB801 TP.MS358.PB802 TP.MS628.PC821 TP.MS638.PB731 TP.MS638.PC821 TP.MT5508.PB801 TP.MT5510I.PC821 TP.R68 PD64 QT572LP 2.1 TP.R68 PD66A TP.RT2982.PC821 TP.RT2982.PD811 TP.RT2984D.PB831 TP.SK708D.PC821 TPD.MS338.PC795 TPD.MS908.PB751 Xiaomi L48M3-AF TPD.T950x.PB793 TPD.T962.PC795 VS.SP33811.2 VS.SP35821.2 VS.SP35822.2 VS35851 X50_Air_MB_H5000 Xbox One ZP.VST.6A338.PB818

joi, 4 martie 2021

Bytrex M4 Pro - Statie radio CB, schema


Pentru marire sau rezolutie mai buna, mariti sau descarcati fisierul folosind butonanele din partea de jos a documentului.

joi, 4 februarie 2021

Backlight - reducere curent prin LED-uri


LED TV Vestel in urmatoarea configuratie:
MB: 17MB211S
IPS: 17IPS62, controler LED MP3398A
Display: VES315WNDS-2D-N22
Backlight: doua barete 17DLB32NER1, 11 + 11 LED-uri la 3V

Curent initial:



Dupa inlocuirea rezistorului din pin 6 (ISET) MP3398A cu 33kohmi:



Dupa aceasta modificare, curentul prin LED-uri este redus de la 260 mA la 122 mA. Scade stresul termic la care sunt supuse LED-urile, este diminuat riscul de defectare a sistemului de iluminare la functionare pe timp indelungat si, implicit, creste durata de viata a televizorului.
Scaderea iluminarii datorate acestei reduceri de curent este sesizabila dar nu afecteaza calitatea imaginii in conditii normale de utilizare.

Clampmetrul (ampermetrul) digital folosit la masuratori in curent continuu, tip UNI-T UT210E, poate fi cumparat din acest magazin.

miercuri, 29 iulie 2020

RT809H - selftest


Pentru a testa programatorul RT809H se selecteaza in lista de producatori RT, apoi la numarul articolului SELFTEST. Testarea se face apasand pe rand Read, Write si Verify. Sunt necesare placi speciale de test (foto mai jos). Pentru testarea portului VGA se  utilizeaza o mufa care are pinii 11 unit cu 4 si 12 cu 15. Daca nu sunt prezente in momentul testului, in fereastra interfetei grafice ar trebui sa apara un astfel de log:

016:  The currently selected:SELFTEST, capacity: 528bits, 66bytes.
017:  Download device programming algorithm......
018:  Algo update OK
019:  >------------------------------------OK---------------------------------------<
020:  Start reading chip......
021:  Buffer data checksum: 16bits_0x1BE4 £¬32bits_0x00001BE4 :
022:  SelfTest 0 test pass
023:  Elapsed time: 1.908 seconds£¬average speed of 34 bytes/sec.
024:  >------------------------------------OK---------------------------------------<
025:  Start writing chip......
026:  Buffer data checksum: 16bits_0x13EC £¬32bits_0x000013EC :
027:  1. ZIF open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
028:  2. VGA ISP 4/11/12/15 open circuit
029:  SelfTestBoard 1 is not well placed.
030:  3. HMI open circuit
031:  4. K26-K33 are open circuit
032:  4. K40-K47 are open circuit
033:  6. Pull-up-20K open circuit:1 2 3 4 5 6 7 8 48 47 46 45 44 43 42 41 9 10 11 12 13 14 15 16 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 32 31 30 29 28 27 26 25
034:  Elapsed time: 1.281 seconds£¬average speed of 103 bytes/sec.
035:  >------------------------------------OK---------------------------------------<
036:  Start verifying chip......
037:  Buffer data checksum: 16bits_0x13EC £¬32bits_0x000013EC :
038:  SelfTestBoard 2 is not well placed.



sâmbătă, 23 mai 2020

Vestel 17MB211 - defect rezolvat

La cuplarea alimentarii se aprinde LED-ul rosu din apropierea senzorului IR. Raspunde la comanda ON (telecomanda sau joystick), LED-ul clipeste continuu dar televizorul nu porneste si nu se aprinde backlight. Desi primul impuls conduce la ipoteza unui defect soft, este bine sa verificam sursele de pe placa de baza, pentru ca exista posibilitatea ca LED-ul sa semnalizeze o protectie.


In acest caz am gasit in iesirea U131 (LM1117, STBY, 3,3V) 5V (scurtcircuit intre intrare si iesire). 

Schema 17MB211

Dump 17MB211 - VES480UNDS