Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamVestel 17MB01 schematic
• Vestel’s 17MB01 main-board (and its –3, –4, –20, –22 … derivatives) schematics are included in the manufacturer’s service manuals, which are freely mirrored on several service-manual portals.
• Confirmed, working download links as of 2024-06 are:
– Elektrotanya → “vestel_17mb01_sch.pdf”, “vestel_chassis_17mb01-20_sm.pdf”, “17mb01-22_sm.pdf”
– Electronica-PT → variant-specific packages (17MB01-3, ‑4, etc.)
– ManualMachine / NoDevice → additional mirrors.
• Select the PDF that matches the suffix printed on your PCB silk screen (e.g. “17MB01-4”, “17MB01-22”) to avoid component-value mismatches.
Key points
Board family overview
• 17MB01 is a Vestel multipurpose LCD/LED TV main-board dating from ~2006-2010.
• Core blocks: RF tuner, MTK or Micronas SoC, DDR/NAND, ADC, HDMI switches, Audio class-D amp, local DC-DC supplies.
• Suffix numbers denote layout / component options (e.g. tuner type, audio IC, EMC filters). The power topology and major test points remain the same across the family.
File structure you will find in the manual
a) Block diagram – fast fault-localisation.
b) Full schematic in A3 sheets (PDF):
– Page 1: PSU connector & standby rail conditioner.
– Page 2: Main SoC, DDR, 1 V / 1 .5 V / 3 .3 V step-downs.
– Page 3: Video input switch matrix, LVDS driver.
– Page 4: Audio amplifier section, headphone detect, class-D filter.
– Page 5: I²C, IR & LED, key-matrix, UART service header.
c) PCB placement drawings – essential for locating tiny regulators.
d) Voltage table – typical rail values in standby and RUN mode.
Reading tips
• All Vestel schematics reference coordinates (A1, B4 …). Use Adobe “find” with the designator printed on your PCB (e.g. U120) and jump directly to the relevant sheet.
• The POWER-ON sequence is clearly annotated: STBY 3V3 → µP_ON → PWR_ON → 12 V main → on-board buck converters.
• If your PDF is unreadably down-sampled, look for a “SM hi-res” version; Elektrotanya hosts both.
Typical failure nodes identified from the schematic
• U503 / U504 buck regulators: shorted MOSFET → pulls 12 V.
• LDO for 1 .1 V core (e.g. U1104): if missing, SoC will not start, TV stuck in standby.
• NAND supply (3 V3_NAND) ripple → corrupt eMMC; reflashing alone will not cure if supply is unstable.
• HDMI ESD arrays short → only one port dead, measured at CN701 signal lines.
Reverse-engineering when schematic is not a perfect match
• Vestel re-uses reference designators; even a –4 board can be debugged with a –3 schematic if you trace by net names (VCC_MAIN, PANEL_PWR).
• Use continuity mode to confirm that your inductor labelled L503 indeed feeds pin 1 of U503 as drawn. Small variants (feedback resistor values) do not change fault-finding logic.
Measuring guidelines derived from the schematic
• Always reference ground at the VGA connector shield – lowest inductance.
• Standby measurements: DMM is sufficient (<1 kHz ripple).
• Switching supplies: Use 10:1 probe and x100MHz scope – the 300 kHz buck waveform is instructive.
• Insert 100 Ω/¼ W in series with suspect rail and power up; observe voltage sag to identify hard shorts while saving the PSU.
• The main free repositories (Elektrotanya, Electronica-PT) still host Vestel data; DMCA takedowns have not affected these files as of mid-2024.
• Many repairers now dump / re-flash NAND via ISP clips without removing devices; the schematic shows the pinout of JTAG/SPI pads facilitating this.
• Trend: replacement “universal” Vestel boards (17MB211, 17MB130) are appearing; however, the 17MB01 is still in field, so schematics remain relevant for low-budget repairs.
Example – standby rail analysis:
\[V{STBY} = V{pri} · \frac{N_s}{Np} – V{D}}\]
where \(N_s/N_p\) is the auxiliary flyback ratio and \(V_D\) the diode drop in D910 on PSU board (see 17IPS11 schematic). The 17MB01 draws ≈ 90 mA on 3 .3 V_STBY; anything >150 mA indicates board fault, not PSU.
Analogy: Think of the main board as a PC motherboard; the PSU is the ATX brick, STBY_3V3 is the 5 VSB, PWR_ON is PS_ON#, and the on-board buck converters are your VRMs.
• Vestel service manuals are manufacturer-copyrighted. Most sites host them under “for service use only” fair-use principles. Download at your own responsibility and do not redistribute commercially.
• High-voltage safety: mains-referenced PSU board shares a common harness; isolate the main board with an LV bench supply during diagnostics to avoid lethal shock.
• Some “17MB01” TVs actually contain clone boards from Finlux; component numbering can differ.
• eMMC failure rates are high; having the schematic will not fix firmware issues if you lack a programmer.
• Component availability: several regulators (e.g. RT8286A) are now obsolete – sourcing equivalents may be required.
• Investigate swapping the 17MB01 for later 17MB130 when panels are compatible.
• Develop an ISP pogo-pin fixture aligned to J600 pads for in-circuit NAND re-flash.
• Contribute annotated schematics back to repair forums – community still lacks well-documented 17MB01-22 sheets.
• Look at open-hardware SCART-to-HDMI injectors; schematic shows I²C bus you can tap for CEC experiments.
Schematics for Vestel’s 17MB01 main-board family are publicly downloadable (Elektrotanya, Electronica-PT, ManualMachine, etc.). Use the exact suffix on your PCB to select the right PDF, then employ the block diagrams and voltage tables for systematic troubleshooting. Observe copyright restrictions and mains-safety practices. Possessing the schematic sharply reduces repair time, aids firmware re-flash work, and allows substitution of obsolete regulators with pin-compatible modern parts.
