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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers General Sansui Electric
SANSUI AU-D907F 修理・整備済 正常動作品(251222)
        

  • Product Quantity
    : 1
  • Starting Bid
    :5,000円
  • Highest Bidder
    : koj******** / Rating:224
  • Listing Date
    :2025年12月22日 11時07分
  • Bidding closes on
    :2025年12月27日 21時40分
  • Auction Number
    :q1213311758
  • Condition
    :Damaged and stained (specify in description)
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
Notes
  1. Plug-in electrical appliances are only shipped by air (shipping by sea requires commodity inspection)
  2. The remittance needs to be completed within the time required by the seller
サンスイ AU-D907F 中古品を修理・整備したものです。

外観は年数なりの汚れや傷などがありますが、比較的良好です。
写真で判断してください。

【入手時の状態】
・ 電源が入りませんでした。

【修理内容】
・ ヒューズが切れていました
下記の処置を行った後に正規の10Aヒューズに交換

非常に長期間保管されていたため、終段回路電源のブロックコンデンサ(8200μF x8)が完全放電していた後に、最初に電源を入れたときに過大なラッシュカレントによってヒューズが切れたと推測しました。以下はWebから得られた電解コンデンサを長期間保管した時の情報

 誘電体(酸化皮膜)の劣化
「電解コンデンサの内部では、アルミ箔の表面にある薄い「酸化皮膜」が絶縁体の役割を果たしています。この皮膜は電圧がかかっていない状態だと、内部の電解液によって少しずつ溶け出したり、変質したりして薄くなってしまいます。」
 修復
「 電圧がかかることで電解液の化学反応が起き、溶け出した酸化皮膜が再び形成されます。」

別電源からブロックコンデンサに電圧をかけて、充電電流がZeroに近くなるまで待ちました。
その結果セットの電源をONしてもラッシュカレントは大きく減少し正常に復活しました。


【整備内容】
・ すべてのボリュームをアルコール+超音波洗浄後に接点復活剤塗布、ガリなし
・ スライドSWは分解・端子磨き・接点グリースを塗布。
・ Push SWはアルコール洗浄後接点復活剤を塗布
・ スピーカ・ヘッドフォンリレー合計3個、接点磨き & 接点復活材を塗布
・ 目視ではんだ付けの怪しい部分を修復
・ ヒートパイプのシリコングリースの塗りなおし
・ 入出力端子磨き
・ 打診(基板を叩いて機能不良やノイズ発生がないことを確認)を実施

【調整】
・ イコライザーブロックのDCオフセット・サーボ調整
・ Power AMP部の 終段バイアス電流、出力DC Offset調整

【確認内容】
・ AUX, TUNER、Tape1,2 入力で音出し確認。
   20Hz ~ 120KHz までの周波数特性がTHRU でフラットであることを確認
・TONE Control ONで仕様通りに低音・高音が変化することを確認
・ PHONO は逆RIAAフィルターを通して周波数特性を測定
  ほぼRIAAカーブに沿っていることを確認し、MM/MCとも正常に音が出ることは確認。
・  8Ω+8Ωダミー抵抗負荷、21W+21W、スイープ信号入力で数時間エージング後、異常がないことを確認
・ ダンピングファクター測定: A側 L/R = 182/ 176 B側 L/R= 159/ 130 で問題はありませんでした。


整備後の特性は写真-10 を参照してください。現在のところすべての機能は正常です。


落札後 72時間以内にご連絡、ご入金がない場合、落札者削除を行いますのでご了承ください。
ノークレーム、ノーリターンでお願いします。

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Product Price JPY
Japanese Consumption Tax(10%) JPY

A 10% consumption tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: SANSUI AU-D907F 修理・整備済 正常動作品(251222)
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my