$2500.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store andyexcuse
(1523) 100.0%,
Location: Andover, Massachusetts
Ships to: US,
Item: 284510035830
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
Return policy details:
Marantz 250:Marantz 250
Modified Item:Yes
Country/Region of Manufacture:United States
Custom Bundle:No
Type:Power Amplifier
MPN:250
Modification Description:Recapped, LED lamps
Marantz:Marantz
Professionally refurbished Marantz 250 Stereo Power Amplifier, 125 watts per channel, originally available 1973-74. Upgraded caps and LEDs, all amplifier functions tested and reliably performing at or exceeding factory spec. PLEASE NOTE: The meter needles and internal springs sustained light damage that could not be totally corrected, and stick intermittently. Unit does not have feet. Presents very well cosmetically, with no significant issues. Notes from the technician – Initial assessment: -Right channel distortion -Right meter does not work -All front panel bulbs do not work -Power transformer loose from chassis due to missing hardware -Meter needles and internal springs could not be totally corrected, and stick intermittently Service notes: -Dismounted transformer from chassis, and dismantled both amp channels completely to have clear access to all internal circuitry. Also Dismounted P.S/Protect Board from back panel for access to replace components. -Closely checked soldering joints on all boards with high powered magnifying glass and re-soldered 10-15 suspect joints -Thoroughly inspected all boards for burning or corrosion: noticed a positive rail feed resistor that cracked into pieces due to excessively overheating on right channel amp board. -Replaced burnt 39ohm 1watt resistor with 47ohm 1watt flameproof resistor -Removed all transistors from Right channel amp board and tested them individually using Atlas DCA55 transistor tester, and then replaced two slightly leaky current drive transistors. -Ohm checked all resistors on both amp channels, P.S/Protection Board, and Meter Drive board: Good -Upgraded all electrolytic caps on both Amp boards to Nichicon gold in audio path and high temp Nichicon low esr for third order filtration -Upgraded all electrolytic caps on P.S/Protection board to slightly higher capacitance value Nichicon low esr, for improved ripple filtration This unit has industrial grade relay that can be cleaned and does not need to be replaced – it will last a very very long time -Buffed relay contacts, tightened relay tension, and loosened spring for more reliable long term contact When inspecting meter drive board noticed incorrectly built circuit from manufacturing line, more specifically a backwards capacitor (see photo #22). This means this unit never fully functioned correctly since it was built! -Used schematic to inspect all components on meter board, to ensure no more manufacturing mistakes were made: good -Replaced all electrolytic caps on meter board with high grade Nichicon low esr, and corrected the polarity of the cap that was originally in backwards. -Pulled both meters out of circuit and tested them individually using laboratory grade signal generator -Cleaned and exercised all switches and board trimmers three times with Deoxit D5, and then applied Deoxit D100 to prevent future oxidation -Calibrated meter strength, amp Bias, and DC offset -Final bench test: 3hr From the owner’s manual – Marantz 250 Stereo Power Amplifier (1973-74) Specifications Power output: 125 watts per channel into 8Ω (stereo) 150 watts per channel into 4Ω Frequency response: 2Hz to 100kHz Total harmonic distortion: 0.1% Damping factor: 100 Input sensitivity: 1.5V Signal to noise ratio: 106dB Ships worldwide, or local pickup can be arranged. The package will be large, heavy, delicate, and will be insured for full value with FedEx, so shipping may be a significant expense.
Frequently Asked Questions About Marantz Model 250 Stereo Power Amplifier, Pro Serviced Upgraded Recapped LEDs in My Website
139.162.145.192 is the best online shopping platform where you can buy Marantz Model 250 Stereo Power Amplifier, Pro Serviced Upgraded Recapped LEDs from renowned brand(s). 139.162.145.192 delivers the most unique and largest selection of products from across the world especially from the US, UK and India at best prices and the fastest delivery time.
What are the best-selling Marantz Model 250 Stereo Power Amplifier, Pro Serviced Upgraded Recapped LEDs on 139.162.145.192?
139.162.145.192 helps you to shop online and delivers Barbour to your doorstep. The best-selling Barbour on 139.162.145.192 are: HOT Men’s BARBOUR INTERNATIONAL @ APOLLO BIKER HOODED LINED BLACK WAXED Jacket M Barbour Cree Tartan Holdall Duffle Perfect for Short Trip or Carry-on MSRP$190 NEW BARBOUR Chelsea Flyweight Black Sportsquilt Jacket in Black Sz L #SJ924 Barbour Black Hybrid Full Zip Puffer Vest Men’s Size Large L VTG Barbour Button Up Shirt 2XL XXL Beige Plaid Cotton Pocket Mens BARBOUR – A150 BEAUFORT WAX COTTON JACKET – SAGE – MADE @ UK -NEW OLD STOCK – 44 Barbour Bradford Men’s Gilet MG10056SG91 Baffle Quilted Forest Large 42-44 Snap Used 2020 Barbour Noah Dry Wax Bedale Jacket Size M Yellow Barbour Sapper Wax Jacket in Classic Black Men’s Size 2XL Barbour International Ariel Quilted Jacket Dark Blue Zip Button Men Size M Barbour A123 GAMEFAIR Wax Jacket C48/ 122CM XXL Sage Green Vintage 90’s Vintage Barbour Hawkstone Parka Jacket 10 S Wax Cotton Womens Hunting Outdoor Barbour Mersea Fleece Jacket Womens 1/4 Zip Barbour Duracotton Parka Wax Warm Jacket – Brown – sz 2XL Men’s Barbour Utility Field Cotton Beige Jacket Size L Mens Barbour Medwick Waterproof Jacket Beige Size S Men’s Barbour Utility Field Wax Brown Jacket Size XL Barbour harton wax coated jacket waxed navy coat L mens NEW MWX2200NY92 Barbour Balcomie Men’s Full Zip Jacket PU Coated Green Size Large Barbour Men’s Otterburn Quilted Lightweight Gilet Vest Size 2XL Olive Green NWT BARBOUR Cabot Quilted Puffer Jacket in Navy Size US 6 Barbour Vest Men’s L Green Polar Quilt Waistcoat Full Zip Outdoors Casual Barbour Gilet Vest Jacket Mens 2XL Quilted Gray Blue Snap Essential Puffer BARBOUR Womens Navy Waxed Lightweight Rain Jacket 8-10 UK Excellent Condition 🧥 Men’s Barbour Dunnon Jacket Wax Blue England Size XL Barbour Shirt Mens 2XL XXL Blue Plaid Tailored Fit Button Up Casual Dress Top Barbour Devon Quilted Jacket Coat Olive Brown New UK Sizing XX-Large XXL Barbour A2040 Leather Cowan Commando Jacket Tan Brown XXL Cowen Padded 00s Rare Barbour Galloway Wool Coat Men’s Size M Barbour Mens Jacket Elmwood Box Quilted Black Coat Small Mens Barbour Border C44/112CM Green Waxed Jacket Pile Lined Outdoors Hunting Barbour SL Spey Wax Jacket / Mens / Burgundy / RRP £300 Barbour Button Down Shirt Mens Large Relaxed Blue Plaid Cotton Casual School BARBOUR- A211 TRANSPORT WAX COTTON JACKET – NAVY – MADE IN UK – 40 – RARE Barbour Essential Poly & Cotton Quilted Gilet Vest NWT Small $149 Charcoal Gray Barbour Ashby mens Olive Green Wax Jacket size XXL New BARBOUR W’s Plus Annandale Quilted jacket US 1X Olive $240 Men’s Barbour Quilt Flyer Jacket Green Steve McQueen Collection England Size L NEW Barbour Arrow Quilted Hooded Anorak Coat in Black – Size US 4 #C2667 BEACON BRAND BARBOUR BLUE BUTTON CARDIGAN SWEATER LONG SLEEVE WOOL MENS SIZE M Barbour International Felling Jacket Mens Medium Green Motorcycle Biker Barbour Jacket Womens 8 Red Cragside Quilted Outdoor Hooded Insulated Zip Coat Barbour International Winter Sprocket Wax Jacket in Black Size XL Barbour Jacket Womens Large Black Quilted Hunting Country Field Lined Coat Lady Barbour Dinley Wax Jacket Men’s Large Olive Barbour Tartan Collection Millfire Quilted Jacket Size 4 Burgundy Red Barbour Shirt Mens XXL Blue Tailored Fit Plaid Preppy Workwear Travel Casual RARE | VINTAGE BARBOUR BEDALE WAX JACKET 41 MEDIUM ORANGE GREEN LINING LINER Barbour Storrs Jacket Waterproof Forest Green MWB0721GN31 New Extra Large XL Barbour Bedale Waxed Coat Mens Size 42 Blue Full Zip Trench Overcoat Barbour Gamefair Wax Jacket Mens C40 Medium Green Vintage Country Classic Coat Barbour Black Bedale Waxed Jacket With Hood Size 38 Barbour Lutz Quilted Jacket Men’s Medium Navy Barbour x Maison Kitsune Overshirt Jacket Men’s Size L Khaki, NEW NWOT Barbour Trooper Wax Cotton Men’s Jacket MWX0019OL71 Olive Large 42-44 (Preowned) Barbour quilted liner jacket Men’s Size 38 oiled cotton Brown vintage BARBOUR – A220 WESTMORLAND – WAX COTTON VEST – SAGE-MADE @UK – SHABBY CHIC – MED Barbour Mens Button Tailored Fit Shirt Green Wetheram Check Long Sleeves Sz S barbour CANVAS military seen on SONS of ANARCHY GEMMA’S jacket TROUT FISHING Barbour Mens Jacket Black Large Chelsea Sportsquilt Quilted Lightweight Vintage Barbour Trekker waistcoat L OLIVE GREEN made in England k Barbour International Polarquilt Fleece Lined Jacket Dark Grey Medium Barbour Beauchamp Travel Jacket XL Men’s Brown Coat Hunting Wlking Shooting BARBOUR- A100 BEDALE- 4 FRONT POCKETS -DESTROYED -FOR REPAIRS -ONE CREST-40 BARBOUR BUTTON DOWN SHIRT CLASSIC FIT LONG SLEEVE GREEN PLAID XL Barbour Waterproof Ashby Jacket Men’s Large Navy Michael Kors Barbour Lightweight Jacket BARBOUR Fibredown Navy Inscar Quilted Full Zip Hooded Jacket Women’s US 12 UK 16 NWT Women Barbour Reversible Hudswell Quilted Jacket Classic Black/Sage Tartan Barbour Highpeak Waterproof Breathable Soft Cotton Tan Jacket Country Coat SZ M Barbour Men’s Carew Cotton-Blend Shirt Blue $140 Large New Barbour WOMEN’S CAVALRY POLARQUILT JACKET NWT 18 in gardenia cavalry Barbour International Burgat Wax Jacket Men’s Large Navy Barbour Cavalry Cavalary Womens Navy Blue Quilted Zip Jacket Size UK 16 Barbour bundle Cotton Polo Long Sleeve And Wool Zip Jacket Heritage Classic M L Barbour Mens Duke Wax Waterproof Brown Biker Quilt Jacket Coat Size Small Barbour Vintage Keeperwear Moleskin Quilted Gilet Vest Hunting Shooting Size XL Barbour Tokito Sports Jacket Quilted Large Skyfall Bond Rare 2011 Green Hooded Barbour Leedale Wax Jacket Mens Small Brown Tweed Military Army Hunting Waxed NWT BARBOUR RED BARLOW GILET QUILTED VEST JACKET SIZE MEDIUM Barbour X Temperley Hertfordshire Wax Jacket Ladies UK 14 Black Mens BARBOUR A322 Tartan Bedale Jacket Wax Cotton Black Coat Field Hunting C36 Barbour Mens XL Wool Overcoat Long Navy Woven Formal Occasion Button Barbour International Duke Wax Jacket Mens Large Sage Green Barbour Vintage Quilt Black Jacket UK 18 US 14 EUR 44 Corduroy Collar And Trim Barbour Ladies Montgomery Wax Jacket-Size 14 Backhouse Barbour Mens Large Waxed Cotton Oilskin Outback Field Barn Jacket barbour beacon sports wax jacket 007 james bond skyfall Barbour Brae Wax Parka Olive Green Ladies UK 12 Barbour Bedale A100 Wax Jacket Outdoor Weatherproof Green Mens C38 97Cm Barbour Spey D Ring Lightweight Thin Fish Spey Soft Cotton Navy Coat Jacket XS Barbour Shirt Mens Large Regular Fit Button Down Solid Green Plaid Check Shill Women’s Barbour Erin Quilt Jacket Green Polyamide England Size 10 Vintage Barbour Lining A297 C38 97cm Warm Pile Fleece Bedale Beaufort Vest Barbour Bedale Waxed Mac Men’s Jacket Tartan Lined Coat Brown Size M Barbour Mens Lomond Tailored Button Down Long Sleeve Shirt M Forest – NWT $110 BARBOUR INTERNATIONAL Outlaw Waterproof Jacket US 4 UK 8 Hooded Coat Blue BARBOUR BABOUR SPEY SPEY Sage Green Size 38 W61cm L60cm Vintage Barbour Moran Quilted Jacket Flag Chelsea Size S Barbour BEDALE SizeS Mens Pullover Fleece Hoodie